Gumout Accessories and Fluids

About Gumout: Science-Driven Automotive Performance

For over eight decades, Gumout has been one of the automotive industry's most trusted names in engine care and fuel system maintenance. Founded in the early 1940s, the brand has built its reputation on a straightforward but powerful principle: better chemistry leads to better engine performance. That commitment to science-backed formulation is at the heart of everything Gumout produces.

What Gumout Makes — and Why It Matters

Modern engines are precision machines, but they're constantly under attack from carbon deposits, gum, varnish, and corrosion caused by the fuels they burn. Over time, these deposits accumulate on fuel injectors, intake valves, throttle bodies, and combustion chambers, quietly robbing engines of fuel economy, acceleration, and power. Gumout's lineup of fuel additives and maintenance fluids is scientifically formulated to clean, protect, and enhance these critical engine and automotive components.

At the core of Gumout's effectiveness is P.E.A. (polyetheramine), an advanced cleaning agent used across several of their flagship products. The Regane® Complete Fuel System Cleaner, for example, uses P.E.A. to remove deposits that other cleaners simply cannot reach, while simultaneously conditioning the fuel system against corrosion. The Multi-System Tune-Up goes even further, treating gas, diesel, and ethanol engines alike — making it a go-to solution for everything from daily drivers to lawn equipment.

Gumout also offers targeted aerosol cleaners, including carburetor and choke cleaners, throttle body and air intake cleaners, and Mass Air Flow (MAF) sensor cleaners — each engineered to restore specific systems to factory-fresh performance. Their Regane® Parts Cleaner/Degreaser rounds out the lineup by tackling gum, varnish, and grease on unpainted metal surfaces, brake components, and more.

Who Gumout Products Are For

Whether you're maintaining a brand-new vehicle, trying to squeeze more miles out of a high-mileage ride, or restoring a classic, Gumout has a solution designed with your engine in mind. Their products are proven to perform on modern engine technologies like direct injection (GDI) and superchargers, while remaining equally effective on older carburetor-based systems. For drivers who take a proactive approach to maintenance, building Gumout into a regular service routine is one of the most cost-effective ways to protect engine longevity.

A Legacy of Innovation

Gumout is part of ITW Global Brands, a division of Illinois Tool Works, which provides the research and development infrastructure behind the brand's ongoing innovation. Decades of real-world testing and laboratory science have shaped a product portfolio that consistently earns high marks from professional mechanics and everyday drivers alike. When you put better science in, better performance comes out — that's the Gumout promise.