Blue Devil Rear Main Sealer (8 oz.)
Blue Devil Rear Main Sealer permanently seals rear main leaks. Just add to engine oil to restore and seal the gaskets.
Guaranteed permanent seal
Restores dried, cracked,
and shrunken rubber seals
Works in gas or diesel engines
How large of a leak does it repair?
Blue Devil will seal leaks in any fluid systems that are seeping or dripping.
How much do I use?
Use 1-8oz. bottle to treat leaks up to 8 quarts capacity.
How long does the repair take?
engine and drive vehicle or equipment to let Blue Devil circulate.
The repair is sealed while you drive (up to 2 days drive time).