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Engine Cool | FAQ

Q: Can BlueDevil Engine Cool be added to Dex-Cool?
A: Yes. BlueDevil is compatible with all types of antifreeze.

Q: Is is safe to use in diesel engines?
A: Yes. BlueDevil Engine Cool is safe for both gasoline and diesel engines.

Q: How much should I use?
A: One 16 oz. bottle will treat cooling systems up to 5 gallons.

Q: Does the cooling system need to be flushed prior to adding BlueDevil Engine Cool?
A: No. However, most automobile manufacturers recommend that the coolant is replaced every 30,000 miles.