For Entire System: It can also clean other parts like the oxygen sensor, the fuel injectors, cylinder heads, and others.
Easy to Clean: Simply pour in your fuel tank. Safe for gasoline, hybrid, and flex-fuel vehicles; does not alter fuel. Not for use in 2-stroke or oil/gas mix engines.
Engine Protection: Proper fuel and exhaust flow will keep that engine running cleaner, smoother, and better, which will also cut down on maintenance costs.