New. For great engine performance, try this fast acting engine treatment
For great engine performance again
The 4 cleaner ingreients stops valve tap, oil burning, and leaks.
Over all, it ups piston compression by freeing sticky piston rings that let combustion power escape down pass the piston - to dirty your oil much sooner, wear out your motor much faster.
This product ends that problem too. Also...
A co-polymer coating adds itself to the cylinder walls and, with piston rings working again like they should, oil burning stops.
A friction modifier smooth rough wear pistons, bearings and valves so they slide without resistance.
Those are a few of the ways this products advantages can go to work making your motor run as if overhauled - but for $100, not $2500.