How Can I Fix a Hydraulic Leak?

#driveyourlife

Hydraulic systems are used in a variety of different pieces of machinery and equipment today.  Hydraulics are often used in applications that need a significant amount of force to be applied, or when large pieces of equipment need to be manipulated or rotated.  Hydraulic systems can be found on heavy equipment or industrial machines, but also on many boats and other small lawn and garden equipment.

A hydraulic system consists of:

  • A reservoir of hydraulic fluid or hydraulic oil
  • A pump
  • A series of hoses and valves
  • hydraulic rams or motors.

When one of the valves are actuated, the hydraulic pump draws fluid from the reservoir and pushes it at high pressure through the hoses to the proper rams or motors moving the equipment.  Since most hydraulic systems are designed to move heavy equipment or create high pressures, the hydraulic fluid is often at very high pressures, from 1000 PSI to more than 5000 PSI.

Due to the high pressure, and constant motion of the rams, motors and pump, it’s not unusual to find leaks in your hydraulic system even with proper maintenance.  You will notice these leaks possibly by a lack of power or force in your system, or more obviously in a fluid leak or drip.  Replacing hydraulic seals is a difficult job that often requires specialty tools and a detailed knowledge of the system.  Also, the close tolerances and smooth machined surfaces in the system make many of the components susceptible to damage if improperly handled or if the wrong tool is used.

If you notice a loss of power or have a leak in your system, the best way to fix your problem is to use BlueDevil Hydraulic Stop Leak.  BlueDevil Hydraulic Stop Leak is a unique plasticizer that does not contain petroleum distillates.  BlueDevil Hydraulic Stop Leak will absorb into the seals in your hydraulic system restoring them back to their original size and flexibility without clogging or harming other components in any
way.  BlueDevil Hydraulic Stop Leak will mix with the hydraulic fluid in your system and can stay there permanently, or even be retreated.

BlueDevil Hydraulic Stop Leak works so well it is guaranteed to make a permanent seal.  Order BlueDevil Hydraulic Stop Leak here.

BlueDevil Hydraulic Stop Leak

You can also pick up BlueDevil Hydraulic Stop Leak at the following auto parts stores:

  • Bennett Auto Supply
  • CarQuest Auto Parts
  • Prime Automotive
  • AutoZone
  • Advance Auto Parts
  • Pep Boys
  • NAPA

 

Pictures Provided by: www.customhydraulics.ca, www.maxmachinery.com and www.tractorbynet.com

215 responses to "How Can I Fix a Hydraulic Leak?"

215 Comments

  1. Michael Trifaro on September 27, 2015 at 10:48 pm

    Can your hydraulic fluid stop leak be used in the hydraulic oil system in a convertible top for a 1994 Mercedes sl500. How does it compare to the lucas hydraulic stop leak and booster. Thank you, Mike

    • BlueDevil Pro on September 28, 2015 at 11:21 am

      Michael-

      Yes, you may use the BlueDevil Hydraulic Stop Leak to seal a leak in the hydraulics for your convertible top. We have successfully used it for this in the past. You will only need to add about 1 ounce of the BlueDevil due to the small capacity. Keep in mind, it may take a few days before you notice results. Overall, the product carries a success rate of about 95%.

      Feel free to contact us at 888-863-0426 with any questions.

      Thank you!

      -BDP

      • Matt on December 21, 2016 at 1:33 pm

        What about in my boat steering system. Would it help there? I have found a small leak in one of the lines which I will be patching. I believe it is a low pressure system since the cap of loosely fitted.

        • BlueDevil Pro on December 21, 2016 at 2:48 pm

          Matt-

          Based on your description, we actually recommend using the BlueDevil Power Steering Stop Leak http://store.gobdp.com/power-steering-stop-leak-00232/. The product is only intended for the rubber seals/gaskets, however, so it would depend on the type of material your line is made of. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

      • Jordan T Febrey on September 26, 2020 at 7:18 pm

        Will blue devil work in a resivore with 15w-40 rotella oil it’s a case 446 tractor with Johnson loader its leaking from both tilt cylinders

        • BlueDevil Pro on September 28, 2020 at 8:47 am

          Jordan-

          Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use with 15w-40 Rotella oil. You should expect to start seeing results after 1-2 hours of operation.

          Thank you!

          -BDP

          • Suraj Kannan on October 12, 2020 at 4:18 pm

            Will it work for 2013 Jeep Grand Cherokee power steering pump leak? I’ve been told to only use the specified power steering fluid for this car, so I am bit concerned to use any stop leak fluids. Do you think it might work?



          • BlueDevil Pro on October 13, 2020 at 9:33 am

            Suraj-

            Thank you for asking about your Jeep Grand Cherokee. Unfortunately, BlueDevil would not be able to seal a leaking power steering pump. Because of the extreme pressure and the pump pushing fluid through the system, the product would not be able to stay in the pump to be able to seal it. Replacing the power steering pump would be your best option.

            Thank you!

            -BDP



          • Shannon Necaise on September 27, 2021 at 9:18 am

            Will this repair a leak in the convertible roof hydraulic lines of a 2012 BMW Z4?



          • BlueDevil Pro on September 27, 2021 at 11:49 am

            Shannon-

            BlueDevil Hydraulic Stop Leak would work to seal leaks coming from rubber seals/gaskets. It would not be able to seal leaking lines or hoses. Replacing the lines may be your best option.

            Thank you!

            -BDP



    • Arshad Ali on March 31, 2016 at 10:50 am

      Hi, my saab 2004 has a ram in its roof which is leaking. I have tried some thing already bt could not work. I live in western australia. First tell me that is really going to work??? And how can i get it?
      Waiting
      Arshad Ali

  2. Clay on October 10, 2015 at 10:40 pm

    Can you use the product a Volvo 4.3l boat engine for a power steering leak? It is leaking from the ram seals I think

    • BlueDevil Pro on October 13, 2015 at 4:04 pm

      Clay-

      You would be able to use the BlueDevil Power Steering Stop Leak for your boat. As long as you are not losing fluid too quickly, you should be able to see some great results.

      Thank you!

      -BDP

  3. Frank on October 17, 2015 at 9:09 pm

    Can this product be used in system using TD-3 hydraulic fluid

    • BlueDevil Pro on October 21, 2015 at 11:49 am

      Frank-

      Yes, the BlueDevil Hydraulic Stop Leak can be used with TD-3 hydraulic fluid. You will be using one oz of the product per quart of fluid in the system.

      Thank you!

      -BDP

  4. George on October 19, 2015 at 6:03 pm

    Would this work on a 03 Mercedes cl500 hydraulic suspension system. There’s a leak In the hydraulic pump I think.

    • BlueDevil Pro on October 21, 2015 at 11:02 am

      George-

      Yes, you would be able to use the BlueDevil Hydraulic Stop Leak in your Mercedes. You will be using one oz of the product per quart of fluid in the system.

      Thank you!

      -BDP

      • Josr on August 9, 2019 at 4:17 pm

        In mine it blow the valve block and started leaking realy bad

        • BlueDevil Pro on August 12, 2019 at 9:35 am

          Josr-

          If you are losing fluid at a rapid rate, the only option may be replacing the valve.

          Thank you!

          -BDP

        • Scotty mccoy on January 2, 2021 at 7:51 pm

          Well this work and a John Deere 455 garden tractor? the hydraulic cylinder that works my three point hitch has a leaky seal. It uses low velocity hydro oil. this be compatible? If so what is the percentage of this stop leak do I use? Thanks

          • BlueDevil Pro on January 4, 2021 at 1:54 pm

            Scotty-

            Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your John Deere. You would use one oz. of the product per quart of fluid in the system. Expect to start seeing results after 1-2 hours of operation.

            Thank you!

            -BDP



    • John on June 12, 2016 at 10:12 am

      Hi George did this work in your ABC system?? I have the same issue this morning

  5. john mataitis on November 2, 2015 at 1:06 pm

    Noticed a small amount of hydraulic fluid coming from the top of the hydraulic cylinder on my outboard engines trim and tilt. How much leak stop should i put in .

    • BlueDevil Pro on November 2, 2015 at 3:14 pm

      John-

      Thank you for your question. You will be using one oz of the BlueDevil Hydraulic Stop Leak per quart of fluid in the system.

      Thank you!

      -BD:

  6. Guy on January 26, 2016 at 3:15 pm

    I have a cardboard baler the top of hydraulic cylinder is leaking will this product gum up motor and the pump system?

    • BlueDevil Pro on January 26, 2016 at 4:02 pm

      Guy-

      No, BlueDevil Hydraulic Stop Leak does not harden or thicken at any point. However, it is not designed to seal the type of leak you are experiencing. BlueDevil Hydraulic Stop Leak is specifically made to stop fluid loss originating from rubber seals/gaskets.

      Thank you!

      -BDP

      • John on January 29, 2016 at 6:01 pm

        I’m sorry, please explain why your hydraulic leak stop isn’t intended to stop a leak on a hydraulic cylinder? I’m at a loss of what it is intended for if it cannot be used to stop that type of leak.

        • BlueDevil Pro on February 1, 2016 at 10:37 am

          John-

          In most cases a hydraulic cylinder leak is due to the hydraulic seals leaking. If that is the case, BlueDevil Hydraulic Stop Leak will work to stop any fluid loss.

          Thank you!

          -BDP

  7. maranga job kenya on March 8, 2016 at 12:00 am

    Please sir,help us here u see the hydraulic cylinder leaking we Av tried to weld it but it is leaking give us the real solution

    • BlueDevil Pro on March 10, 2016 at 11:16 am

      Maranga-

      Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the issues you are having and be able to make any appropriate recommendations.

      Thank you!

      -BDP

  8. Paul on March 30, 2016 at 11:29 pm

    I have a john deere z960a lawn mower and the wheel motors are leaking fluid can I use this product in my hydralic system with out any problem

    • BlueDevil Pro on March 31, 2016 at 9:30 am

      Paul-

      Yes, the BlueDevil Hydraulic Stop Leak would be safe to use in your John Deere lawn mower. You will be using 1 oz of the product per quart of fluid in the system. Feel free to contact our technical support team at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  9. Jason on April 4, 2016 at 11:10 am

    Have you had anyone use or have any feedback for use in the trim and tilt of outboard motors?

    • BlueDevil Pro on April 7, 2016 at 8:52 am

      Jason-

      BlueDevil Hydraulic Stop Leak is compatible to use in the trim and tilt. We recommend adding 1 ounce of BlueDevil per every 1 quart of capacity.

      Feel free to contact our tech support team at 888-863-0426 with any further questions.

      Thank you!

      -BDP

      • Richard Fortin on July 11, 2020 at 3:30 pm

        may i use for floor jack

        • BlueDevil Pro on July 13, 2020 at 9:37 am

          Richard-

          Yes, the product would be safe and compatible to use on a floor jack. Use one oz. of the product per quart of fluid. Feel fee to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!

          -BDP

  10. Travis Crawford on April 4, 2016 at 3:28 pm

    Hi,

    One of my trim cylinders on my boats outdrive developed a small leak on the top seal. The system uses ATF dex 2 fluid. Can this be mixed with this fluid or should I use your Automatic transmission stop leak product?

    Thanks

    • BlueDevil Pro on April 5, 2016 at 4:33 pm

      Travis-

      Yes, BlueDevil Hydraulic Stop Leak is compatible to use in the ATF Dex 2 Fluid. You should add 1 ounce of BlueDevil per every 1 quart of fluid capacity. Once added, you can expect to start seeing results after about 1 – 2 hours of use.

      Thank you!

      -BDP

      • Travis on April 8, 2016 at 1:28 am

        Thanks for the reply, much appreciated. My local auto parts store only stocks your transmission stop leak product, would that be just as effective as your hydraulic stop leak? I am just trying to avoid ordering this online

        • BlueDevil Pro on April 8, 2016 at 8:43 am

          Travis-

          Yes, it would be compatible to use BlueDevil Transmission Sealer. When applying the product use the same ratio: 1 ounce of BlueDevil treats 1 quart of fluid capacity.

          Thank you!

          -BDP

  11. Jim on April 9, 2016 at 8:54 am

    Is this fluid safe for use in Exmark zero turn mowers. Concern is hydro pump operation.

    • BlueDevil Pro on April 11, 2016 at 12:52 pm

      Jim-

      Yes, the BlueDevil Hydraulic Stop Leak is safe for use in your Exmark zero turn mower. The product does not harden or thicken in any way, so it would not have any adverse affects on the pump operation.

      Thank you!

      -BDP

  12. Keith Miller on April 15, 2016 at 1:17 pm

    I have an electric log-splitter which seems to be leaking a small amount of fluid through two of the hoses. The leak is not at a fitting — it seems to be coming right through the hose. However the hose does not seem to be worn at all. What can I do about it?

    • BlueDevil Pro on May 12, 2016 at 4:59 pm

      Keith,

      Thanks for your question about your log splitter. If you are getting hydraulic fluid leaking through the hose then it is most likely that there are some hairline cracks in the hose and your best bet would be to replace it. You may be able to purchase a replacement hose from the manufacturer, or you can try getting a new hydraulic hose made at one of your local auto parts stores.

      Thanks again for your question!
      -BD Auto Pro

  13. Billy on May 1, 2016 at 7:58 am

    Will blue devil damage my fresh rebuilt cylinder seals on backhoe.

    • BlueDevil Pro on May 2, 2016 at 10:14 am

      Billy-

      The BlueDevil Hydraulic Stop Leak will revitalize and recondition the rubbers in the system, and swell or expand them back to their original state. It will not overexpand the rubber or damage any new or rebuilt seals. Feel free to contact our technical support team at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  14. Victor on May 4, 2016 at 9:45 am

    I have a end dump trailer hydraulic piston leak on the rings. Will this product work? And how much would I used?

    • BlueDevil Pro on May 4, 2016 at 11:38 am

      Victor-

      Based on your description, we recommend using the BlueDevil Hydraulic Stop Leak. You will be using one oz of the product per quart of fluid in the system.

      Thank you!

      -BDP

  15. Brad King on May 23, 2016 at 10:51 am

    Hi I have a 95 Chrysler Sebring LX, my power steering system is constantly leaking and making whining noise when I turn the steering wheel, I been adding power steering fluid on a lot, the step leak by Lucas is not helping out at all whatsoever, so if I buy your hydraulic system stop leak and add one oz in it, that will stop the leak and I can be satisfied with the results in a matter of days,

    • BlueDevil Pro on May 25, 2016 at 2:14 pm

      Brad-

      Thank you for asking about your Chrysler Sebring. Based on your description, it sounds like you may have an issue with the power steering pump. Unfortunately, we do not manufacture a product intended to seal a leaking power steering pump. A hard part repair may be your best option.

      Hope this helps!

      -BDP

  16. W.B.Yates on May 24, 2016 at 7:03 am

    The wheel seals on my terex telehandler are leaking …will your product stop the leak?

    • BlueDevil Pro on May 25, 2016 at 8:47 am

      W.B.-

      Yes, the BlueDevil Hydraulic Stop Leak would be able to seal the leak on your Terex. You will be using one ounce of the product per quart of fluid in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  17. CAPT. ELLIS STANLEY on May 24, 2016 at 10:41 pm

    WE HAVE A 1984 JOHNSON OUTBOARD 115 HP MOTOR – THE TRIM/TILT HYDRAULIC MOTOR STOPPED WORKING FOR THE
    UP/DOWN TILT MOVEMENT – EVERYTHING SEEMS TO WORK OK, BUT IT APPEARS THE MOTOR IS NOT PUMPING AS THE OIL MUST BE LEAKING PAST THE SEALS OR WHATEVER – WILL YOUR HYDRAULIC SEALER WORK TO FIX THE PROBLEM?

    • BlueDevil Pro on May 27, 2016 at 9:56 am

      Capt. Ellis Stanley-

      Thank you for asking about your Johnson outboard motor. Based on your description, we would recommend using the BlueDevil Hydraulic Stop Leak. You will be using one ounce of the product per quart of fluid in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

    • Kevin on January 26, 2018 at 11:22 am

      My JCB 3DX super got a crack on its loader valve block & leaking oil. Can I use blue devil to stop the leak??

      • BlueDevil Pro on January 26, 2018 at 2:42 pm

        Kevin-

        Unfortunately our product is not designed to seal a crack. BlueDevil Hydraulic Stop Leak is made to stop leaks coming from rubber seals and gaskets.

        Feel free to contact us with any questions.

        Thank you!

        -BDP

  18. Paul Morinishi on June 6, 2016 at 10:31 pm

    I have a Stingray 185 lx with a Penta engine and stern drive.
    The Trim hydraulic pump is leaking at the hose fitting.
    Looks like the fluid is leaking out the threads and the metal fitting.

    Replaced the oring, but still have a leak. Will your Hydraulic Stop Leak work on the fitting thread leak?

    • BlueDevil Pro on June 17, 2016 at 9:11 am

      Paul-

      Thank you for asking about your Stingray 185 lx. The BlueDevil Hydraulic Stop Leak in only intended for the rubbers in the system. Based on your description, it seems like your leak is coming from the metal fitting, which the product would not have any effect on. A hard part repair may be your best option.

      Hope this helps!

      -BDP

  19. Dana on July 30, 2016 at 2:32 pm

    Can it be used in farm tractors that share fluid between the transmission and the hydraulics system
    I have a Long 560 tractor with small trans/hydraulic leak out of the weep hole on the bottom

    • BlueDevil Pro on August 1, 2016 at 2:59 pm

      Dana-

      Yes, it is safe to use the BlueDevil Hydraulic Stop Leak on your farm tractor. You will be using 1 oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

  20. Sam on August 7, 2016 at 5:13 pm

    Hi
    I have a 1999 Jaguar XK8. A portion of one of its hydraulic hoses that operate the convertible roof had been replaced and reconnected to the old hose with a fitting that goes on top of the hose’s outer skin. This fitting is now leaking oil probably because the skin of the old hose cracked (it’s a known problem). The system uses Pentosin CHS-11 hydraulic fluid.
    Can your product help to seal the leak between the fitting and the hose?
    Is it safe to use your product with Pentosin CHS-11?

    Thank you

    • BlueDevil Pro on August 10, 2016 at 3:09 pm

      Sam-

      Thank you for asking about your Jaguar XK8. The BlueDevil Hydraulic Stop Leak is intended for the rubber seals in the system. It will revitalize and recondition the rubbers in the system and swell, or expand them back to their original state. Yes, the product is compatible with Pentosin CHS-11. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      • Sam on August 10, 2016 at 7:16 pm

        It looks like this is not applicable to my situation.
        Thank you for the professional response – much appreciated.

  21. Craig on August 16, 2016 at 10:58 am

    Is it safe to use in a 210c John deer backhoe? I seem to have small weeping leaks on 3 of the Rams, from the seals.

  22. Brian Mahon on August 18, 2016 at 2:50 am

    My clutch hydraulic slave cylinder on my Nissan van is leaking will BlueDevil seal it

    • BlueDevil Pro on August 18, 2016 at 1:15 pm

      Brian-

      Thank you for asking about your Nissan. The BlueDevil Hydraulic Stop Leak is only intended for rubber seals/gaskets. Unfortunately, BlueDevil doesn’t manufacture a product for the type of leak you have described. A hard part repair may be your best option.

      Thank you!

      -BDP

  23. Ron on September 1, 2016 at 2:07 am

    I bought this formy jc mini cc from leaking hydraulic oil from An unknown area and it let it run for a hour . No results

    • BlueDevil Pro on September 1, 2016 at 9:08 am

      Ron-

      Thank you for asking about your JC Mini CC. Typically, you would start to see improvement after about 100 miles of driving. Depending on the size of the leak, it may take up to around 200 miles before you see the full benefit of the product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  24. Vinayak gawali on September 11, 2016 at 12:14 pm

    Can your product will be used in aluminium cold rolling mill hydraulic system where we are using a heavy normal paraffin based hydraulic oil with viscosity of 32cst?
    What are the side effects if your product will fall on our aluminum strip and get rolled.? Do you have any reference In aluminum cold rolling mill where your product is used successfully.

    • BlueDevil Pro on September 12, 2016 at 12:16 pm

      Vinayak-

      Thank you for your question. The BlueDevil Hydraulic Stop Leak is only intended for, and will only have an affect on the rubbers in the system. It does not harden or thicken in anyway, so it would not have any adverse affects on the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  25. Aarronmvi on September 29, 2016 at 3:03 am

    I work on hydraulic traffic gates and have some slow leaking hose connections would this stop the leaks and if so would it effect the pump or valves in any way?

    • BlueDevil Pro on September 29, 2016 at 11:09 am

      Aarronmvi-

      Based on your description, we would recommend using the BlueDevil Hydraulic Stop Leak, http://store.gobdp.com/hydraulic-stop-leak-00238-00239/ . The product will only have an effect on the rubbers in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  26. cwhaz on November 24, 2016 at 11:12 am

    We have a leak on a dental chair located in a mission clinic in Haiti where we are unable to find someone who can repair. Would this product be safe to use for this application?

  27. David Hall on January 10, 2017 at 10:38 pm

    Will this product work with mil spec 5606 fluid? Its for an Altec 37g boom lift.

    • BlueDevil Pro on January 11, 2017 at 8:41 am

      David-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use with mil spec 5606 fluid. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  28. Tim on January 11, 2017 at 9:24 pm

    Hi
    I have a 2012 Cat 262 skidsteer with a leaky hydraulic pump seal. Will your product work on my skidsteer?

    • BlueDevil Pro on January 12, 2017 at 9:07 am

      Tim-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use in your Cat 262 skidsteer. You should expect improvement after about 2 hours of operation.

      Thank you!

      -BDP

  29. Cesar on February 22, 2017 at 3:42 pm

    Will this work in a stand up forklift, Clark? Using Hydraulic oil 68. Thanks for your time.
    CG—

    • BlueDevil Pro on February 23, 2017 at 9:11 am

      Cesar-

      Yes, the BlueDevil Hyrdraulic Stop Leak (http://store.gobdp.com/products/) is safe and compatible to use in your stand up forklift using Hydraulic oil 68. You should expect to see results after about 2 hours of operation.

      Thank you!

      -BDP

  30. Kara on March 12, 2017 at 5:17 pm

    Will this fix hydraulic pump leak on Nissan convertible?
    Thanks
    K

    • BlueDevil Pro on March 13, 2017 at 9:42 am

      Kara-

      If it is the rubber seal or gasket leaking then BlueDevil Hydraulic Stop Leak will work to stop the leak.  You should add 1 ounce of BlueDevil Hydraulic Stop Leak per every 1 quart of capacity; do not add more than recommended amount.  Expect to start seeing results after approximately 1 – 2 hours of use.

      Thank you!

      -BDP

  31. Toni on April 3, 2017 at 2:15 pm

    I have a motorhome with hydraulic leveling jacks, brand name is PowerGear. They use red ATF fluid and a couple of them are leaking intermittently. Will Hydraulic Stop Leak provide benefit for this?

    • BlueDevil Pro on April 4, 2017 at 10:42 am

      Toni-

      Thank you for asking about your Motorhome. The BlueDevil Hydraulic Stop Leak (http://store.gobdp.com/hydraulic-stop-leak-00238-00239/) is only intended for the rubber seals/gaskets in the system. If the leak is coming from one of those rubber seals/gaskets, then we would recommend using the product for this type of application.

      Thank you!

      -BDP

  32. john rogers on April 15, 2017 at 8:44 am

    I have a john deere 425 lawn tractor with a hydrostatic trans. it seems to be loosing fluid somewhere . would blue devil work and be safe to use on my jd 425. thank you for your help

  33. Elizabeth Jones on April 18, 2017 at 9:09 pm

    Will it work on a Kubota tractor hydraulic fluid leak.

    • BlueDevil Pro on April 19, 2017 at 11:00 am

      Elizabeth-

      Yes, BlueDevil Hydraulic Stop Leak has been successful in this exact application in the past. You should apply 1 ounce of BlueDevil per every 1 quart of fluid capacity. Expect to start seeing results after approximately 1 – 2 hours of use of your tractor.

      Thank you!

      -BDP

  34. RONNIE on April 29, 2017 at 5:54 am

    WILL THIS WORK WITH pentosin chf 7.1

    • BlueDevil Pro on May 1, 2017 at 10:03 am

      Ronnie-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use with pentosin chf 7.1. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

      • RONNIE on May 1, 2017 at 12:07 pm

        VERY GOOD WANT TO USE IT IN MY SLS PUMP FOR MY BMW
        WHAT IS THE CORRECT AMOUNT TO USE?

        • BlueDevil Pro on May 1, 2017 at 1:19 pm

          Ronnie-

          You will be using one oz. of the product per quart of fluid in the system.

          Thank you!

          -BDP

  35. E Forestry LLC on April 30, 2017 at 1:45 am

    We have a 1996 Tigercat 720 Feller Buncher with 4 hydraulic pumps and a 14 section Valve body it is seeping hydraulic oil many places where pieces come together. Would Blue Devil assist in stopping leaks in a system that holds 70 Gallon of hydraulic fluid ?

    • BlueDevil Pro on May 1, 2017 at 10:59 am

      E Forestry LLC-

      The BlueDevil Hydraulic Stop Leak would be able to stop the leaks in your Tigercat 720 Feller Buncher, however, you would be using one oz. of the product per quart of fluid in the system. For a 70 gallon system, you would need a little more than 2 gallons of the BlueDevil Hyrdraulic Stop Leak (http://store.gobdp.com/hydraulic-stop-leak-00238-00239/) to properly treat the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  36. Randy on May 5, 2017 at 6:13 pm

    Hi,
    I have a Cat 303.5C CR mini excavator using CAT HYDO ADVANCED 10 HYDRAULIC OIL SAE 10W. Is you product safe to use with this hydraulic system? If a trace die is added to the system as well to assist in finding the leak, with this have any negative interaction with your product?

    Thanks

    • BlueDevil Pro on May 8, 2017 at 8:56 am

      Randy-

      Yes, you would be able to add the BlueDevil Hydraulic Stop Leak to the system you have described. The product does not harden or thicken in anyway, so it would not have any adverse affects on the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  37. Ken on May 29, 2017 at 9:26 am

    I have a slow leak that I have not been able to locate on my boat. It has a SeaStar hydraulic fluid steering system for inboard boats. I have two helms and an autopilot hooked up to the system. Can this product be safely used in this system and if so how much should I use? I am not sure how much fluid the entire system holds since I’ve never filled it completely.

    • BlueDevil Pro on May 31, 2017 at 8:22 am

      Ken-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on a SeaStar hydraulic fluid system. You will use one oz. of the product per quart of fluid in the system. You may want to contact the dealer for a capacity of the hydraulic fluid to properly treat the system.

      Thank you!

      -BDP

  38. Ray Whitehead on June 3, 2017 at 8:53 am

    Hi, I have a 50″ Bad Boy zero turn mower which has a small leak on the right side wheel unit. It appears to be leaking from a small inspection cap that is held on by two bolts. I don’t feel confident enough to remove the cap to see if it has a seal and what else might pop out as well the cap is removed. Would it be safe to use the Blue Devil Hydraulic Stop Leak in the hydraulic system? The system uses 20w 50 motor oil.

    • BlueDevil Pro on June 5, 2017 at 11:17 am

      Ray-

      Yes, the BlueDevil Hydraulic Stop Leak would be safe and compatible to use on your Bad Boy mower using 20W-50 motor oil. The product does not harden or thicken in anyway, so it would not have any adverse affects on the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  39. lea mayer on June 20, 2017 at 1:18 pm

    I have an Insuladome skylight very large.
    The piston/fluid has a leak. the skylight does not open or close. it is dead. Do you think your product Blue Devil would fix the leak? what about the piston. Point I am trying to make I want to open the skylight.

    • BlueDevil Pro on June 21, 2017 at 10:16 am

      Lea-

      Thank you for asking about your Insuladome skylight. In order to get the benefit of using the BlueDevil Hydraulic Stop Leak, the skylight would actually need to be able to operate. Replacing the piston may be your best option.

      Thank you!

      -BDP

  40. Purushotam Pyakurel on July 29, 2017 at 1:04 am

    Can I used this product in Hydraulic tank leaking of our 50ton hydraulic crane ?

    Thank you.
    Purushtoam Pyakurel

    • BlueDevil Pro on July 31, 2017 at 10:30 am

      Purushotam-

      Yes, you can use the BlueDevil Hydraulic Stop Leak in the hydraulic crane you have described. one gallon of the product would treat up to 20 gallons of fluid.

      Thank you!

      -BDP

  41. Dennis Fox on August 4, 2017 at 1:48 pm

    I have an ASV skid steer leaking hydraulic fluid from the main valve spool assembly at the output fitting. I have changed the fitting twice and still leaking. May be a hairline crack at fitting port on spool. Would Blue Devil possibly stop this?

    • BlueDevil Pro on August 4, 2017 at 3:28 pm

      Dennis-

      Thank you for asking about your ASV skid steer. The BlueDevil Hydraulic Stop Leak in only intended for rubber seals/gaskets in the hydraulic system. Based on your description, it is difficult to say exactly where the leak is coming from, however, the product does not harden or thicken in anyway, so it would not have any adverse affects on the system, regardless of where the leak is coming from. With the product, you should expect to see results after about 1-2 hours of operation.

      Hope this helps!

      -BDP

  42. mark harris on August 4, 2017 at 2:21 pm

    I have a dump trailer with a falcon pump and plastic reservior . the seal between the two seems to be leaking . the pump uses atf fluid. will it stop the leak?

    • BlueDevil Pro on August 7, 2017 at 12:32 pm

      Mark-

      Unfortunately our products are not designed to stop the type of leak you are dealing with.

      Thank you!

      -BDP

  43. Dan on August 22, 2017 at 6:30 pm

    I have a 318 John Deere garden tractor with a leaky hydraulic steering ram. The ram is welded, it can be cut apart, seals replaced and welded back together-this, because of the risk of damaging the new seals is crazy expensive! Will BlueDevil work for this type of ram?

    • BlueDevil Pro on August 23, 2017 at 8:31 am

      Dan-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your 318 John Deere garden tractor. You should expect to see results after about 100-200 miles of driving.

      Thank you!

      -BDP

  44. Andrew Gysi on October 24, 2017 at 8:40 am

    I have a Gravely Promaster 300 mower with a hydraulic deck lift. I noticed the other day that there was some hydraulic fluid leaking from the cylinder. Does this product seal mower hydraulic cylinders from small leaks?

    Thanks!

    Drew

    • BlueDevil Pro on October 24, 2017 at 3:11 pm

      Andrew-

      Thank you for asking about your Gravely Promaster 300 mower. The BlueDevil Hydraulic Stop Leak is intended to restore dried, cracked, and shrunken rubber seals. If the leak is indeed coming from one of those seals, you would be a great candidate for the product.

      Thank you!

      -BDP

  45. Brandon on February 6, 2018 at 11:41 pm

    I have a case 450c bulldozer that is leaking around the rear end/transmission seals. Is this product safe to use with TCH transmission fluid that is required for the rear end/ transmission?

    • BlueDevil Pro on February 7, 2018 at 9:25 am

      Brandon-

      Yes, BlueDevil is compatible and safe to use with TCH transmission fluid. You will use one oz. of the product per quart of fluid in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  46. Tony on May 23, 2018 at 8:58 pm

    They tell me the seals on the rack and pinion on my ’04 Dodge Caravan are leaking. Would Blue Devil help this condition?
    Thanks in advance,

    Tony Joy

    • BlueDevil Pro on May 24, 2018 at 8:42 am

      Tony-

      Thank you for asking about your Dodge Caravan. Based on your description, you would be a good candidate for the BlueDevil Power Steering Stop Leak (https://store.gobdp.com/power-steering-stop-leak-00232/). You will start by adding 1/3 of the bottle into your power steering reservoir, and should expect to see results after approximately 100-200 miles of driving.

      Thank you!

      -BDP

  47. Duane Lorack on June 29, 2018 at 10:56 pm

    Have a 580 case backhoe and has a cylinder leaking on the boom. Will this work in a case 580 hydraulic system.

    • BlueDevil Pro on July 2, 2018 at 9:08 am

      Duane-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use in a case 580 hydraulic system. You will use one oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

  48. Roger Jones on August 14, 2018 at 9:57 pm

    Hello, I have a Class A motor home with hydraulic jacks. Camping World informed me that I have a leak and they want to replace the hoses going to the back Jacks. I told them not to work on the leak. When I got the coach back I look at the lines and there is a small leak at the valve connector. Can the BlueDevil Hydraulic Stop Leak be used to stop the leak at the valve for hydraulic jacks on an RV?

    • BlueDevil Pro on August 15, 2018 at 8:46 am

      Roger-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on an RV. You will use one oz. of the product per quart of fluid in the system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  49. George Tanner on August 22, 2018 at 11:20 am

    I have 2006 Range Rover sport with ACE anti-roll bars, the rear one is leaking fluid which i take its coming from a seal in the ram, the fluid i am using is Cold Climate PSF, will your Blue Devil stop my leak please.
    Thank you…

    • BlueDevil Pro on August 22, 2018 at 2:04 pm

      George-

      Thank you for asking about your Range Rover Sport. As long as the leak is not more than a seep or a light drip, you would be a good candidate for the BlueDevil Hydraulic Stop Leak. You should expect to see results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

    • Wayne Cherrington on January 29, 2019 at 3:28 am

      Hi I have the same problem with my range rover sport did this fix your leak?
      Kind regards
      Wayne Cherrington.

      • BlueDevil Pro on January 29, 2019 at 9:32 am

        Wayne-

        Feel free to contact our technical support line at 888-863-0426 with any questions.

        Thank you!

        -BDP

  50. Roland scroggs on August 24, 2018 at 1:09 pm

    I have a 1970 Ford 3000 with a small hy d relic leak i put half gallon in pump witch is in diff. Stopped leak but now 3 point lift will not work

    • BlueDevil Pro on August 27, 2018 at 9:07 am

      Roland-

      Thank you for asking about your Ford 3000. Based on your description, we recommend draining the fluid completely and refilling it with your regular hydraulic fluid. Being that the leak has stopped, you should be good to go at this point.

      Thank you!

      -BDP

  51. Eddie on September 1, 2018 at 11:44 am

    Have a boat with Volvo pinta power sterring with leaking hydraulic ram at the seal. Recently replaced the seals. Lasted for about 6-8 hours. Now it drips at the piston ram seal when running. About a drip every 2-3seconds. I added a oz of your product. Does it have to run constantly to have the desired effect? Will the product with this?

    • BlueDevil Pro on September 4, 2018 at 11:44 am

      Eddie-

      It does not have to be a continuous run, however, you should expect to see results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  52. Marilyn on October 6, 2018 at 1:12 pm

    I have a B 7300 kubota it is leaking hydrostat fluid… dealer told me to only use kubota brand hydrostat oil in it… will this cause any problems by mixing them?

    • BlueDevil Pro on October 8, 2018 at 9:18 am

      Marilyn-

      The BlueDevil Hydraulic Stop Leak is safe and compatible to use on your B 7300 Kubota. The product does not harden or thicken in anyway, so it would not cause any adverse reactions. You will use one oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

  53. Dagmar Castillo on October 25, 2018 at 3:07 am

    Can your product help with a leaking slave cylinder on my truck? My hydraulic clutch is giving me a problem, and I gave to fill the reservoir daily.

    • BlueDevil Pro on October 25, 2018 at 8:57 am

      Dagmar-

      Unfortunately, we do not manufacture a product intended to treat a leaking slave cylinder. A hard part repair may be your best option.

      Thank you!

      -BDP

  54. Mike on October 31, 2018 at 7:27 am

    Hi,
    i got a Bobcat 323 Excavator and leaking from Swivel Joint.It leaks around 20 drips per hour and causing a lot of oil loss.Can Hydraulic oil seal be used for excavator Swivel Joint seal? Does it clog the hydraulic oil filter and do i need to replace filter after adding it into the reservouir? Thanks

    • BlueDevil Pro on October 31, 2018 at 10:07 am

      Mike-

      Yes, the BlueDevil Hydraulic Stop Leak can be used for the swivel joint seal in your Bobcat 323 Excavator. You will use one oz. of the product per quart of fluid in the system. The product does not harden or thicken in anyway, so it would not clog ports or the filter, nor would it restrict flow.

      Thank you!

      -BDP

  55. FRED Edmonds on November 18, 2018 at 6:17 pm

    Will this stop a internal leak

    • BlueDevil Pro on November 19, 2018 at 9:20 am

      Fred-

      The BlueDevil Hydraulic Stop Leak is intended to treat rubber seals/gaskets. If the leak is coming from one of those rubbers, then you would be a good candidate for the product.

      Thank you!

      -BDP

  56. Belal Khan on November 19, 2018 at 4:18 am

    Hello,
    I work with a crane rental company.There are cranes with 10 to 100 ton capacity. Will your product treat Caltex 68 hydraulic which we use in the cranes & what ratio should be used to treat, say a 100 liter of hydraulic ?

    • BlueDevil Pro on November 19, 2018 at 10:21 am

      Belal-

      Yes, the BlueDevil Hydraulic Stop Leak is compatible to use with Caltex Hydraulic Oil. You will be using one oz. of the product per quart of fluid in the system. One gallon of the product would treat approximately 75 liters of hydraulic fluid.

      Thank you!

      -BDP

  57. John on November 29, 2018 at 7:41 pm

    Can I use this product in a international 1420 combine hydraulic system that is leaking around the hydraulic lines?

    • BlueDevil Pro on November 30, 2018 at 8:58 am

      John-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use in your International 1420 Combine. You will be using one oz. of the product per quart of fluid in the system, and should expect to start seeing results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  58. AL TURNER on December 10, 2018 at 5:19 pm

    I have a 307-c cat excavator, and the upper piston on the boom is leaking, will it have any effect on the system.

    • BlueDevil Pro on December 14, 2018 at 9:15 am

      Al-

      Thank you for asking about your Caterpillar 307C Excavator. Based on your description, we recommend using the BlueDevil Hydraulic Stop Leak (https://store.gobdp.com/hydraulic-stop-leak-00238-00239/). You will be using one oz. of the product per quart of fluid in the system, and should expect to see results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  59. Lee windell on January 19, 2019 at 7:09 pm

    Hi, I have a vauxhall zafira and the clutch slave cylinder has a slow leak. Can I use this product with brake fluid in the clutch and brake system to stop any leaks. Thanks

    • BlueDevil Pro on January 21, 2019 at 9:59 am

      Lee-

      Thank you for asking about your Vauxhall Zafira. Unfortunately we do not manufacture any products designed for that type of leak. A hard part repair may be your best option.

      Thank you!

      -BDP

  60. Gary on January 24, 2019 at 10:01 am

    Will your BlueDevil Hydraulic Stop a leak coming out from the small hole on the top of a Cub Cadet Auto Relief Check Valve p/n SU-9500085.

    • BlueDevil Pro on January 24, 2019 at 1:20 pm

      Gary-

      As long as the leak is coming from one of the rubber seals/gaskets, it would be applicable to use the BlueDevil Hydraulic Stop Leak. You will use one oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

      • Jim Featherly on April 15, 2019 at 6:21 pm

        I have a John Deer 425, I have three or four seals leaking, will your product help me out and is it safe to use with The John Deer hydraulic fluid.

        • BlueDevil Pro on April 16, 2019 at 8:50 am

          Jim-

          Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your John Deere 425. As long as you are not losing fluid too quickly, you would be a good candidate for the product. You should expect to start seeing improvement after approximately 1-2 hours of operation.

          Thank you!

          -BDP

          • Jim Featherly on April 16, 2019 at 1:49 pm

            Thank you, I’ll give it a try and let you know of my results.



  61. Rob on May 7, 2019 at 1:55 pm

    I have a bobcat t190 dripping from one of the oil cooler lines. Will your product work for this?

    Thanks in advance.

    • BlueDevil Pro on May 8, 2019 at 8:39 am

      Rob-

      As long as it’s a light drip, you would be a good candidate for the BlueDevil Hydraulic Stop Leak. You will be using one oz. of the product per quart of fluid in the system, and should expect to start seeing improvement after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  62. Bob Fracassi on May 24, 2019 at 3:00 am

    I have a 06 Mercedes CL500 with their ABC Suspension. My right front strut is leaking. The system takes Pentosin CHF 11. The green can. will your product stop this leak?

    • BlueDevil Pro on May 24, 2019 at 9:32 am

      Bob-

      Thank you for asking about your Mercedes CL500. As long as the leak you are experiencing isn’t more than seeping or lightly dripping, you would be a good candidate for the BlueDevil Hydraulic Stop Leak. You should expect to start seeing results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  63. Roddy Cameron on June 15, 2019 at 1:43 am

    Hi, I have an International 574 with a Qwicke 2000 loader which is leaking from the hydraulic rams. I use UTTO in place of HYTRANS , is BlueDevil safe to use with this in the shared brake/transmission system without harming the brake linings or internals ?
    Thanks, Roddy

    • BlueDevil Pro on June 17, 2019 at 9:22 am

      Roddy-

      Unfortunately, the BlueDevil Hydraulic Stop Leak can not be used in brake systems. Replacing the rams may be your best option.

      Thank you!

      -BDP

  64. Roddy Cameron on June 17, 2019 at 4:17 pm

    Many thanks for your reply,
    cheers, Roddy

  65. Trey Strickland on June 27, 2019 at 9:29 am

    My boat steering hydraulic helm pump is leaking from the shaft. This old style helm pump doesn’t allow easy access to replace seals. Will this product come into contact with the shaft seals to stop the leak? If so can I just pour into the helm’s fill valve?

    • BlueDevil Pro on June 27, 2019 at 10:12 am

      Trey-

      Yes, you may add the BlueDevil Hydraulic Stop Leak through the helm’s fill valve. You will be using one oz. of the product per quart of fluid the system holds, and should expect to start seeing results after approximately 1-2 hours of operation.

      Thank you!

      -BDP

  66. Frank Floyd on July 17, 2019 at 10:16 pm

    I have a Versalift bucket truck that has a 7 gallon hydraulic capacity. I used Blue Devil leak stopper to repair a leak appox 1 year ago with great results. I have now developed another leak in a different hydraulic cylinder and would like to add more Blue Devil leak stopper. I am concerned about adding more of this to the system for fear of having too much in the system. Should I drain the system and then add the Blue Devil leak stopper?

    • BlueDevil Pro on July 18, 2019 at 8:56 am

      Frank-

      You would be fine to add the product to your existing fluid. What you added approximately a year ago would have lost its effectiveness after about 2-3 hours of operation. Also, the product does not harden or thicken in anyway. It would not gum up anything or adversely affect the hydraulic system. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  67. Stephanie on August 1, 2019 at 2:41 pm

    Does it stop hydraulic hose leak on a 2006 Range Rover Sport.

    • BlueDevil Pro on August 1, 2019 at 3:58 pm

      Stephanie-

      Thank you for asking about your Range Rover Sport. Unfortunately, the BlueDevil Hydraulic Stop Leak would not be intended for a hose leak. The product is intended to treat rubber seals/gaskets. Replacing the hose would be your best option.

      Thank you!

      -BDP

  68. Betty on August 4, 2019 at 2:46 am

    I was told by mechanic that my 2016 Mazda has a hydraulic leak. How do I know this is so? (The car only has 60,000 miles.) If this is true,would your product resolve this issue?

    • BlueDevil Pro on August 5, 2019 at 9:36 am

      Betty-

      Thank you for asking about your Mazda. You may identify a leak by seeing fluid dripping to the ground, or you can check the hydraulic fluid reservoir to see if it is low on fluid. Based on your description, we do recommend using the BlueDevil Hydraulic Stop Leak. You will use one oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

  69. archie cash on October 7, 2019 at 10:30 pm

    Have a 2006 Gulf Stream Motorhome with a Dewalt hydraulic system (power gear). Can Blue Devil help my system as I have one Jack that creeps down about four inches and stops? Thanks!

    • BlueDevil Pro on October 8, 2019 at 9:22 am

      Archie-

      Thank you for asking about your Gulf Stream Motorhome. As long as you are not losing hydraulic fluid too quickly, you would be a good candidate for the BlueDevil Hydraulic Stop Leak. You will use one oz. of the product per quart of fluid in the system, and should expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  70. nicole j moss on November 25, 2019 at 6:57 pm

    I have an old ironworker and a 200 ton press break, will it work in that?

    • BlueDevil Pro on November 26, 2019 at 9:41 am

      Nicole-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use in your ironworker and press brake. You will use one oz. of the product per quart of fluid in the system, and should expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  71. John W Robison on December 10, 2019 at 7:38 pm

    I have a 1997 John Deere 6400 tractor. Several of the hydraulic cylinders had slow leaks at the seals. This tractor has wet brakes and wet clutch. I used your hydraulic leak stop at the recommended concentration. It stopped the leaks. I then needed to take my tractor to J. Deere for a brake job (they had been going bad for a while) and they went nuts when I told them I’d added a hydraulic leak stop to my hyd. system and said they needed to check out the entire hyd. system because the blue devil additive had probably damaged it. What do I need to tell them? Is your hyd. leak stop safe to use in tractors with wet brakes and wet clutches?

    • BlueDevil Pro on December 11, 2019 at 9:58 am

      John-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your John Deere tractor as described. The product does not harden or thicken in anyway. It also does not affect the viscosity of the fluid whatsoever. The product works by revitalizing and reconditioning rubber seals/gaskets. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  72. Rick on April 23, 2020 at 11:15 pm

    Will this product work in a terramite backhoe that uses 10w 30 motor oil as hydraulic fluid

    • BlueDevil Pro on April 24, 2020 at 8:44 am

      Rick-

      Yes, the BlueDevil Hydraulic Stop Leak would be able to treat the leak you’ve described on your Terramite backhoe. You would be using one oz. of the product per quart of fluid in the system, and should expect to start seeing improvement after 1-2 hours of operation.

      Thank you!

      -BDP

  73. Dan N. on April 25, 2020 at 11:29 am

    Which of your products would you recommend for a John Deere 425 tractor/mower that leaks quite a bit of transmission/hydraulic oil (the actual product that is leaking is John Deere Hy-Gard Transmission and Hydraulic oil). Thanks.

    • BlueDevil Pro on April 27, 2020 at 9:25 am

      Dan-

      Thank you for asking about your John Deere. How quickly are you losing fluid? As long as the leak isn’t more than seeping or lightly dripping, we recommend using the BlueDevil Transmission Sealer. You would use one oz. of the product per quart of fluid in the system, and should expect to start seeing improvement after 1-2 hours of operation.

      Thank you!

      -BDP

  74. Tom on May 27, 2020 at 6:30 am

    I have a CAT 299D Skidsteer with a slow leak coming from the hydraulic pump. The machine takes HYD 68. Is your product safe to use And should it fix the problem?

    • BlueDevil Pro on May 27, 2020 at 10:34 am

      Tom-

      Thank you for asking about your CAT skid steer. The BlueDevil Hydraulic Stop Leak would be safe to use, however, would have a difficult time trying to seal the pump itself. The product is more intended to treat rubber seals/gaskets. The pump may force the product away from the leak and not allow it to treat the leaking area. Replacing the pump may be your best option.

      Thank you!

      -BDP

  75. Tom B. on June 16, 2020 at 6:34 pm

    I have a Backyard Buddy storage lift. I’ve had it since 1998 with no problems. Last year I noticed a small leak coming from the front of the cylinder. So I made a drip tray. The Lift uses Dexron III transmission fluid. (10 qts.) Do you think your BlueDevil would stop the leak? Thanks, Tom B.

    • BlueDevil Pro on June 17, 2020 at 1:59 pm

      Tom-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your Backyard Buddy. For your application, you will use 10 oz. of the product (one oz. per quart of fluid) and should expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  76. Gary Sisk on July 4, 2020 at 3:27 pm

    I have a 28 ton wood splitter. The hydraulic cylinder is leaking at the ram. I don’t know what type of seal is used in my wood splitter. Will this product work for this without knowing what kind of seal is inside the cylinder?

    • BlueDevil Pro on July 6, 2020 at 9:46 am

      Gary-

      The BlueDevil Hydraulic Stop Leak would only be able to treat leaking rubber seals. If the seal was made out of another type of material, the product would not have any influence or cause any kind of harm. It does not harden or thicken in anyway, so the worst it would do is not seal the leak.

      Hope this helps!

      -BDP

  77. Dave wolan on July 12, 2020 at 11:57 pm

    I have a john deere 2355 tractor that when fluid gets warm the high speed forward gears slip they say it probably the forward clutch pack seal leaking in the hydrostatic transmission. Will this problem work on this

    • BlueDevil Pro on July 13, 2020 at 9:45 am

      Dave-

      Thank you for asking about your John Deere. Yes, the BlueDevil Hydraulic Stop Leak can be used for the problem you’ve described. You will use one oz. of the product per quart of oil in the system, and should expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  78. Eric W on July 31, 2020 at 2:04 pm

    Can Blue Devil help with a weeping axle seal leak of a new seal. Just replaced the seal and still have a small leak. This is in a Tractor using 303 oil

    • BlueDevil Pro on August 3, 2020 at 9:00 am

      Eric-

      The product we manufacture for this type of a leak is intended to revitalize and recondition rubber seals/gaskets. The product will not just fill in a hole or plug in a gap. Unfortunately, it doesn’t sound like BlueDevil would help with the leak you’ve described.

      Thank you!

      -BDP

  79. Brian Brenner on August 5, 2020 at 4:08 pm

    Kubota bx22 tractor with a backhoe. The bucket cylinder has a small leak from several year of sitting parked inside. Will this work adding it to the hydrostatic transmission as that’s where the fluid comes from for the backhoe

    • BlueDevil Pro on August 6, 2020 at 8:29 am

      Brian-

      Thank you for asking about your Kubota BX22. The BlueDevil Hydraulic Stop Leak would work for the type of leak you’ve described. Yes, you would want to add the product to the fluid system experiencing the leak. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  80. Duncan Ballantine on October 2, 2020 at 8:24 am

    Is Blue Devil Hydraulic Stop Leak compatible with Pentosin CHF 2s to repair a leaking power steering rack in ia Volvo XC90?

    • BlueDevil Pro on October 2, 2020 at 10:19 am

      Duncan-

      The more appropriate product to use for the power steering rack leak on your Volvo XC90 is the BlueDevil Power Steering Stop Leak. It is compatible with Pentosin CHF 2s.

      Thank you!

      -BDP

  81. Joe Johnson on November 16, 2020 at 10:09 pm

    I have a 1999 JCB 214e backhoe .The rams at the base of the hoe are leaking and, when under pressure, squirts out hydraulic fluid. Ram on front loader bucket leaking. Will blue Devil stop leak work for my JCB backhoe.how much product should be added.

    • BlueDevil Pro on November 17, 2020 at 9:00 am

      Joe-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on your JCB backhoe. You will use one oz. of the product per quart of fluid in the system. Expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  82. Jay on December 12, 2020 at 1:46 am

    I have a 2010 Volvo XC60. There is a leak in the hydraulic power steering line. Would either this product, or the blue devil power steering stop leak be applicable?

    • BlueDevil Pro on December 14, 2020 at 9:09 am

      Jay-

      Thank you for asking about your Volvo XC90. Based on your description, we recommend using the BlueDevil Hydraulic Stop Leak. You will use one oz. of the product per quart of fluid in the system. Expect to start seeing results after 100-200 miles of driving.

      Thank you!

      -BDP

  83. Michael Huber on December 13, 2020 at 9:19 pm

    have seeping leak in lift cylender on a lahman skid loader will your product work hasonly one resivor and pump for to work lift asembly and drive 20 gallon resivore howmuch would i use

    • BlueDevil Pro on December 14, 2020 at 9:17 am

      Michael-

      Yes, the BlueDevil Hydraulic Stop Leak would be able to seal the leak you’ve described on your Lahman Skid Loader. You would use one oz. of the product per quart of fluid in the system. One gallon of the BlueDevil Hydraulic Stop Leak would treat 20 gallons of hydraulic fluid.

      Thank you!

      -BDP

  84. Eric on December 28, 2020 at 11:10 pm

    I have a mccormick 1.45c full hydrolic systeme and i gat a leak on the rear axel seal can i use bleudevil to fix that problem whithout burn my hydrolic pump

    • BlueDevil Pro on December 29, 2020 at 9:23 am

      Eric-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use on the application you’ve described. The product does not harden or thicken in anyway, so it would not cause any damage to the system or the pump. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!

      -BDP

  85. jeff on February 4, 2021 at 5:03 pm

    We it be advisable to use this as a preventative – if I don’t currently have a hydraulic leak, will this product be good to keep seals from leaking in the future?

    Is it possible for me to put too much product in – if I end up putting in more than the recommended amount will that cause a problem?

    • BlueDevil Pro on February 5, 2021 at 8:43 am

      Jeff-

      Yes, the BlueDevil Hydraulic Stop Leak can be used as a preventative maintenance/measure. It will help keep the rubber seals/gaskets revitalized and prevent them from deteriorating. It is not one of those things where more of the product would be better. You really only want to use the recommended amount. The product does not harden or thicken, however, so it would not cause any adverse reaction.

      Thank you!

      -BDP

  86. John Berkemeier on February 24, 2021 at 8:15 am

    I have a 1996 Case 580 Super L 4 WD back hoe. Calls for TCH Hydraulic fluid slow leaks dripping from several cylinders. Is this compatible with TCH Hydraulic Fluid? If so do I add each time I add fluid?

    • BlueDevil Pro on February 24, 2021 at 8:34 am

      John-

      Yes, the BlueDevil Hydraulic Stop Leak is safe and compatible to use with TCH Hydraulic fluid. You should only need to use the product once. It is not the kind of product that you would need to add each time the fluid is changed.

      Thank you!

      -BDP

  87. Andrew Pritchard on March 7, 2021 at 3:04 pm

    Would this product work to stop a leaky clutch slave cylinder which uses is the same reservoir as the brake fluid and uses DOT 4 brake fluid (volvo s70)

    Andrew

    • BlueDevil Pro on March 9, 2021 at 10:50 am

      Andrew-

      We would not recommend using the BlueDevil Hydraulic Stop Leak for the type of application you’ve described. The product can not be added to brake systems.

      Thank you!

      -BDP

  88. Peter on March 21, 2021 at 8:12 pm

    I have a Kubota M59 Tractor Loader Backhoe, with a Hrydrostatic Transmission and wet disc brakes which all use the shared hydraulic / HST fluid. The tractor has a very slow leak in the rear axel and transmission area. I understand that BlueDevil should not be used in automotive brake systems, but is your product safe to use in HST transmissions with wet disc brakes?

    Thank you!

    • BlueDevil Pro on March 22, 2021 at 8:41 am

      Peter-

      Yes, BlueDevil Hydraulic Stop Leak is 100% safe and compatible to use on your Kubota M59. You will use one oz. of the product per quart of fluid in the system. Expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  89. Nick on June 3, 2021 at 2:41 pm

    Can I use this on the cylinders on a 2011 kx60-3 kubota excavator with hydraulic oil ref hv46

    I have leaks from the shafts and internal and won’t lift off ground

    • BlueDevil Pro on June 3, 2021 at 3:01 pm

      Nick-

      Yes, the BlueDevil Hydraulic Stop Leak is 100% safe and compatible to use on your Kubota excavator. As long as you are not losing oil too quickly, you would be a good candidate for the product. Expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

      • Nick on June 3, 2021 at 3:14 pm

        Brilliant thank you

  90. leroy turner on June 9, 2021 at 1:58 pm

    i have a case backhoe that has several seal leaks on the cylinders, blue devil pro help me out for a while

    • BlueDevil Pro on June 9, 2021 at 3:49 pm

      Leroy-

      Based on your description, we recommend using the BlueDevil Hydraulic Stop Leak. The product is intended for leaks that are seeping or lightly dripping. As long as you are not losing fluid too quickly, you would be a good candidate for the product. Expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

  91. Ethan Moore on June 13, 2021 at 1:18 pm

    Would this work for a 2004 Audi A4 Quattro’s clutch system?

    • BlueDevil Pro on June 14, 2021 at 8:42 am

      Ethan-

      Yes, BlueDevil Hydraulic Stop Leak is safe and compatible to use on your Audi. You will use one oz. of the product per quart of fluid in the system.

      Thank you!

      -BDP

  92. Anthony Brzowski on June 14, 2021 at 10:30 am

    I have an 11 year old Scaggs Tiger Cat Zero turn that appears to have devolped a leak around the shaft out of the hydraluic pump to the controll arm. This unit uses 20-50w motor oil can the Blue Devil prodouct be used in this application? Thanks AWB

    • BlueDevil Pro on June 14, 2021 at 11:21 am

      Anthony-

      Yes, the BlueDevil Hydraulic Stop Leak can be used in the application you’ve described. You will use one oz. of the product per quart of oil. Expect to start seeing results after 1-2 hours of operation.

      Thank you!

      -BDP

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