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Head Gasket Sealer | FAQ

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• What does BlueDevil Fix?
Is it safe to use BlueDevil in my vehicle?
Do I need to flush the cooling system?
My car is overheating. Will BlueDevil correct this?
How does it work?
How long will the repair last?
What are the tell tale signs of a worn or leaking head gasket?
Will BlueDevil prevent a gasket from blowing?
My freeze plugs are the soft type. Will BlueDevil work on them?
My thermostat is hard to reach. Do I really have to remove it?
Does BlueDevil work on plastic heater cores?
Are there any applications where BlueDevil will not be effective?
Will BlueDevil work on aluminum engines?
Will this product knock me out of an engine job?
Will you guarantee your product to work?
I tried the product and my radiator has a white crystalline deposit or jell, what is this?

What does BlueDevil Fix?

It permanently seals cooling system leaks such as radiators, heater cores and freeze plugs. It also permanently seals most blown head gaskets, cracked heads, warped heads and cracked blocks.

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Is it safe to use BlueDevil in my vehicle?

Yes. BlueDevil is safe to use in all water-cooled systems. It is non-clogging and is 100% chemical. It does not contain any filings or pellets that can plug up radiators.

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Do I need to flush the cooling system?

Yes. Flush the radiator and cooling system with a flushing agent after removing the bottom radiator hose. Flush thoroughly a second time with water to remove all traces of agent.

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My car is overheating. Will BlueDevil correct this?

No. All cooling related problems must be solved first. Defective fan switch, fan clutch, clogged or restricted cores, heavy scale and sediment deposits, or systems jellied from antifreeze must all be properly functioning and capable of adequately cooling the vehicle.

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How does it work?

BlueDevil reacts to temperature differential created by airflow at the leak point. That temperature differential is the catalyst for the chemicals in Blue Devil to react and form its chemical weld.

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How long will the repair last?

BlueDevil PERMANENTLY seals leaks.

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What are the tell tale signs of a worn or leaking head gasket?

• A rough idling engine with large amounts of vapor coming from the tailpipe
• Loss of coolant without an external leak and carbon deposits inside the tailpipe
• Bubbles in the radiator

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Will BlueDevil prevent a gasket from blowing?

No. There are no preventative claims made for the product.

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My freeze plugs are the soft type. Will BlueDevil work on them?

Yes, BlueDevil will seal leaks in all types of freeze plugs.

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My thermostat is hard to reach. Do I really have to remove it?

Yes, BlueDevil must be applied to a free flowing system.

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Does BlueDevil work on plastic heater cores?

Yes, it is suitable to repair all types of leaks in all types of heater cores.

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Are there any applications where BlueDevil will not be effective?

BlueDevil should not be used to seal seam leaks in radiators or heater cores.

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Will BlueDevil work on aluminum engines?

Yes, BlueDevil will bond to all metal types-aluminum, steel, cast iron, even plastic cores and tanks.

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Will this product knock me out of an engine job?

No, the application should be used for those customers who are unwilling or don’t have the money to spend on a car what would not justify the expense.

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Will you guarantee your product to work?

BlueDevil will work when the diagnosis is correct and it has been used in accordance with the directions.

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I tried the product and my radiator has a white crystalline deposit or jell, what is this?

These are telltale signs of a radiator that is in need of service. When fluids are not changed often enough under severe operating conditions or in areas with hard water, scale deposits form in the passages of the core. Sometimes the old fluids will jell or crystallize and can be seen in the system. To remove these deposits flush cooling system using a flushing agent or a flushing machine.

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