The ORIGINAL No Smoke plus Stop Leak

Stops exhaust smoke by preventing from oil getting past valves and piston rings into the combustion chamber. Synthetic chemistry restores body and pliability to dried out seals and reduces oil leaks. Improves compression, power and performance, cushions worn bearings and quiets noisy lifters. Effectively reduces exhaust smoke. For use at each oil change. Bottle is calibrated for 4, 6, & 8 cylinder engines.