Diesel Head Gasket Repair

Diesel Head GasketDiesel engines can be more prone to head gasket failure than other types of engines.  Diesel head gasket repair can also be more complicated that other head gasket repairs due to the complexity of a diesel engine and the extra work involved in the repair.  Diesel head gasket repair also often has to be done specifically at a specialty diesel engine shop or dealership which can charge higher labor rates which also will add to the cost and complexity of the job.

Diesel engines can blow a head gasket just like a gasoline engine.  Diesel engines also have higher combustion pressures during normal operation so a diesel engine head gasket leads a much more difficult life.  A gasoline engine relies on a spark to ignite the fuel-air mixture so the pressures and temperatures are limited.  If they get too high, the fuel/air mixture ignites on its own, called knocking and can cause damage to the head gasket.  On the other hand, a diesel engine operates because the intake air charge is so hot that when the fuel is injected into the cylinder it combusts due to the high heat so no spark is needed.

To make sure the air charge is heated enough to run, some diesel vehicles will utilize glow plugs or intake air heaters during startup or cold weather.  The one thing every diesel engine does to help heat up the intake air charge is to have a relatively high compression ratio.  The more the air is compressed by the piston, the hotter it will get so most diesel engines have compression ratios at least about 15:1 but sometimes upwards of 20:1!  On top of these high compression ratios, many diesel motors have turbo charges adding even more pressure.  Once all this air is stuffed into a tiny combustion chamber, pressures are already extremely high putting lots of stress on the head gasket.  Once you add the fuel and it ignites, pressure skyrocket up to as much as 2000 PSI or higher!

These high pressures put lots of stress on the head gasket in your diesel motor.  Most diesel motors are designed to last for lots of miles since they are usually relatively low revving engines due to the longer stroke.  To help make sure the head gaskets last as long as the rest of the motor, many diesel engine manufacturers have added an increased number of head bolts or used exotic materials in their head gaskets to help them last longer, but many head gaskets will fail on diesel engines even with normal use.

Due to the complexity of a Diesel engine, head gasket replacements can often be expensive jobs.  The job is often more complicated due to the extra equipment on diesel engines like the high-pressure injection pump and turbocharger, and the mechanics completing the job will often charge more for their services.

In order to avoid paying these high costs for replacing your diesel head gasket, consider repairing your head gasket instead.  BlueDevil Head Gasket Sealer is a non-particulate sealing agent that you can add to your vehicle’s cooling system.  This sealing agent will bond to your current head gasket at the leak point until the leak is permanently sealed stopping your head gasket leak and keeping your engine running.  BlueDevil Head Gasket Sealer can hold up to the high pressures in your diesel engine and keep it running properly.

For more information about BlueDevil Head Gasket Sealer, visit our product information page here: BlueDevil Head Gasket Sealer.

You can also purchase BlueDevil Head Gasket Sealer at any of our partnering local auto parts stores like:

  • AutoZone
  • Advance Auto Parts
  • Bennett Auto Supply
  • CarQuest Auto Parts
  • NAPA Auto Parts
  • O’Reilly Auto Parts
  • Pep Boys
  • Fast Track
  • Bumper to Bumper Auto Parts Specialists
  • S&E Quick Lube Distributer
  • DYK Automotive
  • Fisher Auto Parts stores
  • Auto Plus Auto Parts stores
  • Hovis Auto & Truck Supply stores
  • Salvo Auto Parts
  • Advantage Auto Stores
  • Genuine Auto Parts stores
  • Bond Auto Parts stores
  • Tidewater Fleet Supply
  • Bumper to Bumper Auto Parts
  • Any Part Auto Parts
  • Consumer Auto Parts

Pictures Provided By:

diesel_head_gasket.jpg – By JBromley – Licensed by Getty Images – Original Link

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25 responses to “Diesel Head Gasket Repair

  1. I have an 08 ford 6.4 powerstroke with a bad head gasket that shoves compression into the cooling system and coolant out of the overflow under higher Rpms. Will this product work for my situation?

    1. Regan-

      Thank you for asking about your Ford with 6.4 Powerstroke Diesel. Normally on gasoline engines we recommend pulling the spark plug from the affected cylinder to help relieve pressure and allow BlueDevil to create a permanent seal.  However, as you know you would be unable to do this on a diesel engine as it has glow plugs rather than spark plugs.   How quickly is the pressure building up in the cooling system? Please contact our technical support line at 888-863-0426 so that we an get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!


        1. Cody-

          Yes, it appears you would be using approximately 1.5 quarts of the BlueDevil Head Gasket Sealer for your Chevy 6.6L Diesel. Feel free to contact our technical support line at 888-863-0426 with any other questions.

          Thank you!


  2. LOL I know previous customers have commented it says to contact customer support so here it goes. I have a 2008 F350 6.4 that at 30 lb of boost compression gases leak into the coolant system causing my coolant to overflow the Degas bottle. I know it’s the head gasket I was going to replace the head gaskets but thought I may give this a shot. The only thing I worry about if plugging up is my oil cooler I do not have EGR coolers anymore. What are your thoughts

    1. Jeremy-

      Thank you for asking about your Ford F-350. As long as the vehicle will maintain idle for a full 50 minutes without overheating or stalling out, and you are not losing more than about a quart of water/coolant during that 50 minute run, you would be a great candidate for the BlueDevil Head Gasket Sealer (https://store.gobdp.com/head-gasket-sealer-38386/). The product does not contain any solid or particulate matter, so it is a non-clogging product. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!


  3. I have a 95 Chevy Suburban 2500 with a 6.5 diesel engine. Recently purchased and started rolling white smoke from the exhaust that smells like coolant. Will this product repair my problem? As I just purchased it, I really don’t want to spend a fortune on replacing the head gasket.

  4. I have a 1991 Mercedes-Benz 350SDL that smokes white on idle after startup. It doesn’t smoke on the freeway or after it warms only on idle. Will this help? I know I need a new engine thermometer and will be replacing soon and doing a coolant flush as well. Thanks for your help!

    1. Alex-

      Thank you for asking about your Mercedes-Benz 350SDL. Are you noticing any other symptoms such as a loss of water/coolant or is the vehicle overheating at all? Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!


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