Kroil Kreen All-in-One Gas & Oil Treatment - Engine Cleaner Additive - Improves Compression, Reduces Oil Use & Removes Carbon Deposits - For Gas & Diesel - Can - 1 qt - 4 Pack (AZKR161C4)

Kroil Kreen Gas & Oil All-in-One Treatment is a powerful all-in-one engine oil treatment and fuel system additive designed to restore performance, improve efficiency, and extend engine life. Engine deposits, sludge, and varnish can lead to poor combustion, higher oil use, and reduced power—but Kreen attacks these issues head-on. Its advanced low-viscosity formula penetrates deep into your engine’s internal components to remove carbon deposits, dissolve sludge, and clean valve stems, piston grooves, and oil passages.When added to the engine oil, Kreen thoroughly cleans the crankcase, oil lines, and seals, helping reduce oil consumption and recondition older engines. When used as a fuel additive, it cleans injectors, fuel systems, and combustion chambers in both gasoline and diesel engines. This dual-action performance helps restore engine power, improve compression, and increase fuel efficiency, resulting in a cleaner, smoother-running engine with better mileage.Trusted by professionals since 1939, Kreen is proudly made in the USA, VOC compliant in all 50 states, and engineered to deliver consistent, measurable results. Whether you're performing internal engine cleaning or routine fuel system maintenance, Kreen is the essential engine booster that keeps your engine running like new.We’ve been around long enough to see a few things, and the world has certainly changed over the years. But regardless of how things have evolved, three constants remain: metal rusts, parts lock up, knuckles get scraped. To solve these universal challenges, we established the Kroil brand in 1939 with the goal of producing the very best penetrants on the market. Since then, our Original and Silicone formulas have been getting hard-working folks out of tightly locked situations in just about every industry…and quite a few home scenarios as well.