Sta-Bil 22255 Diesel Fuel Stabilizer & Performance Improver - 1 Gallon

Sta-Bil

<h3>About STA-BIL: Protecting Engines for Decades</h3><p>STA-BIL is a flagship brand of Gold Eagle Co., a privately held Chicago company with roots going back to 1932. While Gold Eagle was founded by Armin Hirsch to develop innovative automotive chemicals, the STA-BIL product line itself was acquired by Gold Eagle in the mid-1980s from Knox Laboratories — and it quickly became one of the most recognized names in engine protection. Today, STA-BIL is widely regarded as <strong>America's #1 fuel stabilizer</strong>, backed by independent lab testing and decades of consumer trust.</p><p>What makes STA-BIL stand out from the crowd is the science behind every bottle. The brand's proprietary formulas combine antioxidants, anti-corrosives, and detergents to address the root causes of fuel degradation — problems that become especially acute when engines sit idle for weeks or months at a time. Gasoline can begin to break down in as little as 30 days, forming gum and varnish deposits that clog fuel injectors and carburetors. STA-BIL's treatments stop that process in its tracks, keeping fuel viable for up to 24 months during storage.</p><p>Over the years, what started as a single product has grown into a family of more than 25 specialized formulas. Whether you own a classic car, a motorcycle, an outboard boat, a lawnmower, a snowblower, a generator, or an RV, there is a STA-BIL product engineered for your specific needs. Key lines include <strong>STA-BIL Storage</strong> for seasonal storage preparation, <strong>STA-BIL 360&deg; Protection</strong> — widely cited as America's most-preferred ethanol treatment — <strong>STA-BIL 360&deg; Marine</strong> for boats and watercraft, and <strong>STA-BIL Diesel</strong> for diesel-powered engines of all types.</p><p>STA-BIL's reach extends well beyond the consumer market. The brand is endorsed by more Original Equipment Manufacturers than any competing fuel stabilizer, with OEM partners spanning power equipment, marine, and recreational vehicle industries. This kind of industry-wide trust doesn't happen by accident — it reflects decades of consistent product performance and a commitment to formulating treatments that are safe across all engine platforms, including fuel-injected systems, carbureted engines, catalytic converters, and oxygen sensors.</p><p>For anyone who takes their equipment seriously, STA-BIL's <a href="/14862-sta-bil-fuel-additive-12140">fuel additives</a> represent one of the easiest and most cost-effective forms of preventive engine maintenance available. A small investment in treatment at the start of storage season can prevent costly carburetor rebuilds, fuel injector cleanings, and hard-start frustration come spring.</p><h3>Why Ethanol Protection Matters</h3><p>Modern pump gasoline in the United States is typically blended with ethanol — often up to 10% (E10) or even 15% (E15) — and that ethanol brings a unique set of challenges for stored fuel systems. Ethanol is hygroscopic, meaning it actively attracts and absorbs moisture from the atmosphere. That moisture can lead to phase separation, corrosion in metal fuel system components, and deterioration of rubber seals and gaskets. STA-BIL's formulas are specifically engineered to counteract these effects, making them an essential tool for anyone storing gasoline-powered equipment through the off-season. All STA-BIL products are compatible with ethanol-blended fuels up to E85, making them as relevant for modern vehicles as for vintage or small-engine applications.</p>