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Reviews & Testimonials
Exactly what it claims!
Loved by this skeptic
I have never believed in “magic fluids” that fix mechanical failures in gaskets and seals, but when faced with a $900 transmission repair I decided to try this product.
After only 3 days in my system, I am astonished to report that my thoroughly shredded torque converter gasket (which used to drop about a quart every 100 miles) is completely sealed. I havn’t seen a drop spill in over a month since the leak first dissipated.
Kudos, Blue Devil. You have made a believer out of me.
The Best
I’ve tried a few products this one actually works. Within 2 days the chirping was gone and the leak was sealed. Highly recommended for your older vehicle. Saved me $$.
Ford Pinto Fixed!
Your BlueDevil transmission sealer kept my Ford Pinto on the road! I have had this car forever and although some consider it to be worthless it holds a certain value to me, my transmission started to leak just over a month ago, my local NAPA representative advised me to try BlueDevil out, after driving my car for the weekend the leak was non-existent, thank you! Rob – Fairfax, VA
Recommend!
This was the easiest fix I have ever encountered, I just poured this BlueDevil into my transmission fluid and two days later my leak stopped, I recommend this to everyone! Michael – Tyler, TX
Proof!
If you are in the beginning stages of a transmission leak this product will not only cure the problem but has proven to be a permanent stop to the leak, my car is living proof of that! ” Paul – Athens, GA
FAQ
BlueDevil Transmission Sealer is a unique plasticizer for rubber seals. BlueDevil absorbs into the seal to soften, expand & revitalize the size and flexibility to its original condition.
BlueDevil will seal leaks in any fluid systems that are seeping or dripping.
1 oz of BlueDevil treats 1 quart of transmission fluid
Start engine and drive vehicle or equipment to let BlueDevil circulate. The repair is sealed while you drive (up to 2 days drive time).
NO. BlueDevil mixes with the fluid and can stay in the system.
BlueDevil is a permanent repair!
YES. BlueDevil does not contain petroleum distillates, which can destroy seals after temporarily expanding them. It is safe to repeat treatment if other seals leak in the future.