STA-BIL® In-Season Essentials are fuel system cleaners and ethanol treatments for engines in active use. Prevent buildup before it starts, fix rough or non-running engines fast, and protect fuel systems from damage. Whether you’re on the road, on the water, or in the yard.
Ethanol-blended fuel attracts moisture and leaves deposits. Over time, gum and varnish build up in carburetors and injectors, causing rough idling, hesitation, and reduced fuel economy.
STA-BIL In-Season Essentials address both prevention and repair. Every day treatments keep systems clean.
Fix-it products clear existing deposits fast. Marine formulas handle the extra moisture of life at sea.
Fuel system cleaners, ethanol treatments, and fix-it additives for cars, boats, and outdoor power equipment.
STA-BIL In-Season ProtectionAmerica’s #1 ethanol treatment
America’s Most Preferred Marine Treatment
Fixes Rough/Surging Engines
Fixes Non-Running Engines
All fuels, ethanol blended or not cause carbon, gum, and varnish which could impact power and performance. Keeping up with fuel system maintenance is easy with STA-BIL branded products.
Keep engines running their best with STA-BIL In-Season Protection or STA-BIL 360 Marine. Proven to clean and protect against carbon, gum, varnish, and corrosion.
STA-BIL has been one of America’s most trusted fuel treatment brands since 1958. Millions of engines rely on our products every season, from backyard mowers to commercial marine fleets.
Fuel stabilizers and rust protection for off-season storage
Revive engines that won’t start after storage
Remove water and prevent fuel line freeze
Protection (Orange liquid) is for everyday use at every fill-up. It cleans the fuel system and keeps fuel fresh up to 12 months. Storage (red liquid) is for long-term storage up to 24 months.
Every fill-up for best results. Regular treatment prevents carbon buildup and protects against ethanol corrosion.
Fast Fix is for engines running rough due to gummed carburetors. For engines that won’t start after storage, use Start Your Engines! first.
Yes, but it’s formulated for high-moisture environments. For land-based equipment, In-Season Protection is the better everyday choice.
1 oz per 5 gallons of fuel. Add it to your gas can before filling so every piece of equipment gets treated automatically.
Shop STA-BIL In-Season Essentials and keep your engines running right.
