Top Rated Fuel Additives

STA-BIL   10-oz 2-cycle or 4-cycle engines Fuel Additive

STA-BIL fuel stabilizer keeps gas fresh for up to 24 months. This eliminates the need to drain fuel before storing your equipment and ensures quick easy starts the next time you go to fire it up.

Mechanic In A Bottle   8-oz 2-cycle or 4-cycle engines Fuel Additive

8 oz Fuel Treatment Gas & Diesel – Cleans Carburetors / Injectors / Gum & Varnish, Eliminates Water, Fix & Maintain Poor or Non-Running Engines, Maintain Peak Performance. Tired of engines that will not start or run rough? Do you want to keep your engine and equipment running better longer? Relied on by professionals and Do-It-Yourselfers, Mechanic In A Bottle is the fastest, easiest fix for fuel-related engine problems—no tools, repair bills, or hassle – just pour in the tank! This powerful formula restores old fuel, cleans carburetors and injectors on the machine, encapsulates water so it burns out clean, dissolves varnish buildup, quickly restoring any engine back to peak performance. For small equipment (mowers, trimmers, chainsaws, generators), use before your first start in the spring for easy starting after storage or sitting. Use all year (monthly or each fill-up) to maintain equipment and engines at top shape for peak performance and reliability. A must-have in your tool kit, It helps save your fuel, fuel system, engine, and wallet! Avoid wasting time and money—fix it fast and keep it running its best with Mechanic In A Bottle!

Toro   12-oz 2-cycle or 4-cycle engines Fuel Additive

Toro Premium Fuel Treatment helps ensure clean, reliable engine performance and protection. Good for your lawnmowers, snow blowers, weed wackers, leaf blowers and other small engine power equipment. Using Toro Fuel Treatment with every fill up provides protection for two and four cycle small engines.

Start Your Engines!   2-oz 2-cycle or 4-cycle engines Fuel Additive

STA-BIL START YOUR ENGINES! fuel system revitalizer is designed to ensure easy starting of 2 and 4 cycle motors, smooth rough idling and stalling, and helps remove gum and varnish from throttle plate and carburetor.

STA-BIL   10-oz 2-cycle or 4-cycle engines Fuel Additive

STA-BIL 360° protection is the ultimate ethanol treatment. STA-BIL 360° protection, America's no. 1 ethanol treatment, is engineered to combat the negative effects of ethanol-blended fuels.

Sea Foam   16-oz 2-cycle or 4-cycle engines Fuel Additive

Sea Foam High Mileage 16 oz

STAR TRON   8-oz 2-cycle or 4-cycle engines Fuel Additive

Star Tron enzyme fuel treatment is a multifunctional fuel additive which uses a unique enzyme technology that allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months. Star Tron allows fuel to burn more completely, which results in maximum performance, fuel efficiency and reliable operation. Star Tron will stabilize fuel for up to two years, preventing the formation of gums and other solids that clog carburetors and fuel injectors. Star Tron helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that can be safely eliminated while the engine operates. Star Tron Small Engine formula is ideal for use in all gas engines including; boats, cars, trucks, motorcycles, small equipment as well as engines that use pre-mix fuel.

Ethanol Shield   4-oz 2-cycle or 4-cycle engines Fuel Additive

Prevent future engine problems with Ethanol Shield. This year-round triple antioxidant formula fuel stabilizer is used for your power equipment with 2-cycle and 4-cycle engines. This preventative maintenance formula eliminates then prevents ethanol-related problems. It removes water, prevents corrosion, provides easy engine starting all year, and keeps stored fuel fresh.

MARVEL   1-oz 2-cycle or 4-cycle engines Fuel Additive

Marvel mystery oil® lubricates the entire fuel system-fuel pumps, fuel injectors or carburetors and the top portion of the cylinders. Using Marvel mystery oil in your fuel extends the life of these vital components by providing them with lubrication that fuel alone does not provide. Marvel reduces and prevents varnish and gum build-up, two key contributors to robbing engine performance. Spark plug life is also extended by using Marvel in your fuel. It creates a cleaner burning cylinder environment that reduces carbon build-up on spark plugs resulting in better firing plugs that increase performance and durability. In addition, Marvel mystery oil® improves fuel mileage by reducing internal friction in the engine.

HEET   12-oz 4-cycle engines only Fuel Additive

HEET Gas-line antifreeze and water remover prevents gas line freeze up and removes water from the fuel system year round. It is safe for all four cycle engines including fuel injected engines. This product helps prevent rust and corrosion by getting the water out of fuel. It can be used with every fill up in below freezing temperatures or whenever you want to absorb water from gasoline. This anti freeze and water remover comes in an easy pour 12 Oz. bottle.

Ariens   4-oz 2-cycle or 4-cycle engines Fuel Additive

Ariens fuel stabilizer is proven to reduce ethanol-related problems while stabilizing fuel for up to 3 years. Protects all internal engine components from corrosion and varnish due to ethanol blended fuels.

Star brite   16-oz 2-cycle or 4-cycle engines Fuel Additive

Star Tron Enzyme Fuel Treatment is a fuel additive which uses a unique enzyme technology that allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months. Star Tron allows fuel to burn more completely, which results in maximum performance, fuel efficiency and reliable operation. Star Tron will stabilize fuel for up to two years, preventing the formation of gums and other solids that clog carburetors and fuel injectors. Star Tron helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that can be safely eliminated while the engine operates. Star Tron Small Engine formula is ideal for use in all gas engines including; boats, cars, trucks, motorcycles, small equipment as well as engines that use pre-mix fuel.

Star brite   16-oz 2-cycle or 4-cycle engines Fuel Additive

The first product to combine enzymes from the #1 ethanol fuel treatment in traditional Star Tron with corrosion inhibitors.