STA-BIL 360 Protection - Small Engine - 4oz

STA-BIL 360 Protection - Small Engine - 4oz is America's #1 ethanol fuel treatment, designed for anyone who operates small engines seasonally or stores equipment for extended periods. Whether you're maintaining a lawn mower, ATV, chainsaw, generator, or marine outboard, this fuel additive prevents the corrosive effects of ethanol-blended gasoline, which absorbs moisture and degrades fuel quality over time. Small engine owners face unique challenges because these machines often sit idle between seasons, making fuel stability critical to reliable cold-start performance and consistent operation.

The formula works by stabilizing fuel at the molecular level, preventing gum and varnish buildup in carburetors, fuel injectors, and fuel lines—the primary failure points in small engines. STA-BIL 360 Protection keeps fuel fresh for up to 12 months, meaning you can confidently store equipment without draining tanks or risking fuel degradation. Simply add one 4oz bottle at every fill-up; the concentrated formula treats fuel systems comprehensively while also cleaning deposits to restore lost performance. This preventative approach is far more cost-effective than carburetor cleaning or fuel system repairs caused by stale fuel.

This product is ideal for mechanics, seasonal equipment users, and motorsport enthusiasts who want to protect their small engine investments without complexity. The 4oz size fits standard fuel cans and is compatible with all gasoline-powered small engines—no compatibility concerns across brands or engine types. Mechanics routinely recommend ethanol treatment as preventative maintenance because it eliminates the leading cause of off-season fuel-system failure, saving customers expensive repair bills and downtime when equipment is needed most.