10 Best Fuel Cleaner of December 2025

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

Chevron

• 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

• Lucas fuel treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected
• Use it to pass smog tests. Finally, it totally neutralizes the harmful effects of low sulfur diesel fuel.
• Tan color
• 1 Quart

LUCAS

• Cleans and lubricates the fuel system. Neutralizes low sulfur fuel problems
• Increases power and miles per gallon by burning excess exhaust emissions
• Made in USA
• Increases the life of pumps and injectors

LUCAS

• 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

• ELEMENT

Motorcraft

• 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

• The product is 5, 25 ounce, fuel treatment, for gasoline LPG and diesel fuel, contains no alcohol/solvents/kerosene/diesel fuel, lubricates rings and cylinder walls for longer life, increases mileage, cleans and lubricates valves, pumps, carburetors, and injectors
• Easy and simple use kit
• The product is manufactured in china
• A great tune-up in a bottle
• Cleans and lubricates the fuel system
• Neutralizes low sulfur fuel problems
• Increases power and miles per gallon by burning excess exhaust emissions
• Increases the life of pumps and injectors

Lucas Oil

• DIESEL FILTER

Motorcraft

• 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