10 Best Fuel System Cleaner of December 2025

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Chevron

• Cleans injectors, carb jets and passageways
• Cleans and lubricates intake valves, pistons and cylinders
• Dissolves and cleans fuel residue in fuel systems
• Dissolves oil deposits in crankcase
• Clean timing chain tensioners and VVT actuators, quiet noisy lifters
• 100 percent pure petroleum
• EPA registered product
• Liquefies gum and varnish deposits or internal engine contaminants
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions

Sea Foam

• Fuel system cleaner quickly cleans fuel injectors, valves and combustion chambers
• One can will treat 20 gallons of gasoline
• Restores performance and gas mileage
• Proven to increase combustion quality and power output
• Compatible with all fuel system materials, alcohol-blended fuels and common fuel additives

BG

• Features And Benefits: Greatly Reduces Harmful NOx Emissions
• These Are Complete Line Of Heavy-Duty Shop Products
• Through Creativity, Productivity And Innovation - This Brand Continues To Develop The Finest Automotive Accessories

Lucas Oil

• Removes deposits from port/indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, combustion chamber
• Prevents future carbon buildup
• Conditions fuel to fight ethanol and water corrosion
• Maximizes performance and fuel economy
• Reduces emissions

Gumout

• Formulated to help save gas and lower emissions by deep cleaning the entire fuel system
• Formulated to help restore peak performance and reduce friction by lubricating engine parts
• Formulated to help prevent ethanol deposits and inhibit corrosion
• Works with modern gasoline engines such as turbo, direct inject and hybrid vehicles
• Compatible with cap-less gas systems ›

STP

• Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
• Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
• Reduces: rough idle, engine surge, hesitation, and spark plus fouling
• Improves: cold start performance, and fuel stability for up to one year
• Automobiles and trucks use every 3, 000 miles or at your next oil change. All other gasoline engines use as needed (motorcycles, dirt bikes, boats, ATVs, RVs, water craft, lawn care, etc.)

TECHRON

• 3-in-1 fuel additive keeps new engines clean and improves vehicle's performance
• Improves fuel economy an average of 3.2 percent
• Increases horsepower an average of 2.6 percent
• Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)
• Fit type: Vehicle Specific

Royal Purple

• Designed to exceed expectations - Red line complete SI-1 fuel system cleaner treatment for cleaning & preventing corrosion in fuel systems
• Perform & protect - Fuel additive cleans injectors, carburetors, valve & combustion chamber deposits with a powerful concentrated blend of high-temp and low-temp detergents
• Efficient fuel burn - Gas treatment that enhances gasoline stability, while reducing the buildup of gum and varnish formation
• Easy to use - Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
• Why red line - Established in 1979, red line products perform & protect better than any on the market. No compromises

Red Line

• Use in gas, ethanol/flex fuel, diesel & biodiesel engines
• Restores fuel economy and improves engine performance
• PEA (polyetheramine) effectively removes carbon deposits from the entire fuel & oil systems
• Stabilizes fuel and oil for up to 2 years
• Helps pass emissions testing, Lubricates upper cylinders, and Fights ethanol related rust & corrosion

Gumout