Bardahl's Ring-Eeze restores power and performance and contains powerful detergents to clean off varnish and break down sludge. As a vehicle is driven, its engine is gradually wearing out its lubricating oil, using up the chemical additives and base oil oxidizes that forms varnish and sludge. Ring-Eeze removes varnish and sludge preventing piston rings and lifters from sticking and restoring free movement of critical engine parts. Ring-Eeze reinforces OEM additives blended into motor oil so that future oil degradation may be reduced.