BLUE DEVIL RADIATOR & BLOCK SEALER 16 OZ repair and seal leaks / engine block 

BlueDevil Radiator & Block Sealer is an easy-to-use formula that will repair and seal leaks in radiators and/or engine blocks. Our radiator sealer does not contain solid or fibrous materials and will not clog or harm cooling systems. It will bond to plastic, cast iron, aluminum, alloy or metal. BlueDevil Radiator & Block Sealer is compatible in gasoline and diesel engines. It is a guaranteed permanent repair.

Permanent repair for radiator and block leaks.

Works effectively on plastic, aluminum and/or metal radiators

Contains no solids or fibrous materials. 

Safe and Easy to use. 

Directions | BlueDevil Radiator & Block Sealer | Part #00205

NOTE: DIRTY OR CLOGGED COOLING SYSTEMS SHOULD BE CHEMICALLY FLUSHED BEFORE INSTALLING BLUEDEVIL RADIATOR & BLOCK SEALER.

IMPORTANT: When engine is cold, remove radiator cap.  ENGINE MUST BE COLD TO AVOID SEVERE BURNS.

If radiator is full, drain enough antifreeze to allow space for BlueDevil.  If the vehicle does not have a radiator cap, product may be installed through the top radiator hose.

IMPORTANT: POUR SLOWLY!  Starting with a cold engine and the heater on maximum setting, slowly pour BlueDevil into the radiator as the vehicle idles.

After installing BlueDevil, replace radiator cap. Allow vehicle to idle for 45 minutes with the radiator CAP ON and BlueDevil in the system

Top off radiator with clean antifreeze or water. BlueDevil can remain in the system.

CAUTION! KEEP AWAY FROM CHILDREN AND AVOID EYE OR SKIN CONTACT.  IF EYES OR SKIN BECOME IRRITATED, RINSE WITH COLD WATER IMMEDIATELY. IF SWALLOWED, DRINK LARGE VOLUMES OF WATER AND CONSULT A PHYSICIAN IF DISCOMFORT CONTINUES.

How to use blue devil radiator and block sealer - YouTube

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