Is Blue Devil head gasket sealer permanent?

BlueDevil contains no solid or particulate matter and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, and it's safe and easy to use as a permanent seal for your head gasket leak.
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How long does head gasket sealer last?

Hopefully, a head gasket sealer is a permanent fix. But, if you are still noticing evidence of a leak, you may need to get the head gasket replaced. If the damage to this component is severe, the product will only last about six months.
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Is head gasket sealer permanent?

Head gasket sealers can temporarily fix a leaking head gasket, but they're not a permanent solution. These products last a little while and can only do so much; eventually, the wear and tear will need to be dealt with for your car to run properly again.
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Will Blue Devil head gasket sealer ruin engine?

Is Blue Devil Bad for Your Engine? The answer is a resounding no. And if you are wondering about the safety of using other brands of rear main seal conditioners and stop-leak products like Bar's Leak or Justice Brothers, don't worry. They almost all use the same active ingredient.
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Do you have to flush Blue Devil head gasket sealer?

After pouring BlueDevil slowly, let vehicle idle with CAP ON for 50 minutes. You do not need to flush the system a second time after process is complete.
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Blue Devil Head Gasket Sealer: 1 Year Later



How long do you leave BlueDevil in?

Pour 1 bottle (8 oz.) into leaking component's oil sump, or crank case. Treats 4 to 6 quarts of motor oil. Start engine or equipment and operate for 1 to 2 hours or until leak has stopped (for extreme leaks up to 2 days drive time may be required).
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Should I flush radiator before using head gasket sealer?

Pour into radiator or header/expansion tank

If you are applying to a hot engine be careful as the cooling system will be under pressure. Do not pour K-Seal directly onto the radiator core. If you are concerned coolant flow is obstructed we recommend flushing the cooling system prior to using any K-Seal products.
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Will BlueDevil clog your radiator?

BlueDevil Radiator & Block Sealer is an easy-to-use formula that will repair and seal leaks in radiators and/or engine blocks. It does not contain solid or fibrous materials and will not clog or harm cooling systems.
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What is best product to seal a blown head gasket?

Summary List
  • Best Overall: Steel Seal Blown Head Gasket Fix Repair Sealer.
  • Best Value: K-Seal ST3501 HD Multi Purpose One Step Permanent Coolant Leak Repair.
  • Easiest to Use: BlueDevil 38386 Head Gasket Sealer.
  • Most Versatile: Gasgacinch 440-B Gasket Sealer and Belt Dressing.
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Can you use too much gasket sealer?

Applying too much product can cause excess sealant to squeeze out and migrate into areas where it might cause trouble – such as clogging the screen of the oil pickup.
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How do I know if my head gasket sealer is working?

They can definitely help prolong the life of your car. After using a head gasket sealer, be sure to check back on your car after a few days to ensure there are no more leaks. You can be sure the sealant worked by noticing that the overheating issues have stopped popping up.
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What are the first signs of a blown head gasket?

Bad head gasket symptoms
  • White smoke coming from the tailpipe.
  • BUBBLING IN THE RADIATOR AND COOLANT RESERVOIR.
  • unexplained coolant loss with no leaks.
  • Milky white coloration in the oil.
  • Engine overheating.
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Does head gasket sealer cause problems?

Is head gasket sealer safe for my engine? Yes. Because the particles used in K-Seal are so small, they can only seal holes that are up to 0.635 mm in diameter, so if they manage to find their way down passages in the heater core or radiator, they won't have any effect on them.
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Does Blue Devil really work?

Does BlueDevil head gasket sealer actually work? Yes. The BlueDevil head gasket sealer works to seal cracks and leaks that cause damage to your engine.
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Do you change oil before or after head gasket sealer?

Once repaired, drain Steel Seal from the cooling system and replace with 50/50 coolant or your usual antifreeze of choice. WATER IN OIL If water is present, you must change the oil and filter before proceeding. Change oil and leave one quart low. Add last quart after the repair is complete.
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Can you fix a head gasket without replacing it?

A blown head gasket fix can be as easy as dumping a bottle of sealant in your radiator, and you're good to go. The seal created from our product is as permanent as replacing the head gasket, but with less money and time.
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Is BlueDevil permanent?

BlueDevil contains no solid or particulate matter and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, and it's safe and easy to use as a permanent seal for your head gasket leak.
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Can you use BlueDevil with antifreeze?

If the radiator is full, drain down the antifreeze to allow enough capacity for BlueDevil. IMPORTANT: POUR SLOWLY! Start the engine while cold, then turn the heater on max. With engine idling, SLOWLY POUR BlueDevil into the radiator.
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Can I put head gasket sealer in the reservoir?

If using in a small cooling system, including all 4 cylinder engines, mix ½ bottle of the Head Gasket Sealant with the warm water. TIP: If you do not have access to your radiator and vehicle has a pressurized reservoir, then product can be added to reservoir.
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