20 Best Fuel Additive For Cars (2023 Updated)

Over time, poor or questionable gasoline can foul up your car’s fuel system. It’s important to keep this critical system clean so your car can work at peak efficiency and power. Rislone Gasoline Fuel System Treatment is made to improve the quality of gas by increasing its cleaning ability, adding lubrication, removing contaminants, reducing spark knock, and helping to prevent the fuel from going bad.

It’s far more than your average fuel injector cleaner – it’s one of the most awarded and popular fuel system treatments on the market. It’s even won a PTEN (Professional Tool & Equipment News) Innovation Award – a difficult task for a fuel treatment product.

One dual-cavity bottle contains the same amount of additives equal to a bottle of regular fuel injector cleaner, upper cylinder lubricant, fuel stabilizer, gas dryer, gas treatment and octane booster.

In other words, this is one powerful bottle. This formula increases power, performance, mileage and saves you gas by cleaning and lubricating the complete fuel system. It also happens to be our most popular fuel treatment worldwide.

STP Super Concentrated Fuel Injector Cleaner (5. 25 fluid ounces) STP Super Concentrated Fuel Injector Cleaner contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors.

Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling. This product is made with jet fuel, a high-quality carrier of active ingredients. This product is compatible with cap-less gas systems.

5. 25 fluid ounces bottle treats up to 21 gallons of gasoline. For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care.

Lucas Red N Tacky Grease is a smooth, tacky, red lithium complex grease fortified with rust and oxidation inhibitors. It has good water resistance and washout properties. It has excellent mechanical stability and storage life.

It is able to withstand heavy loads for extended periods of time. It can be used in many agricultural, automotive and industrial applications. Lucas Red N Tacky Grease is fortified with a high degree of extreme pressure additives that give it a TRUE Timken load much higher than other greases of this type.

Its especially good for sliding surfaces and open gears.

Vehicles with higher mileage accumulation can suffer from the effects of age, including carbon build-up over time and corrosion in the fuel system. That can impact performance and increase maintenance costs.

Techron High Mileage Fuel System Cleaner helps keep your engine humming, no matter how many roads your vehicle has traveled.

Cleans petroleum residue and disperses moisture from fuel system, fuel injector, valves, rings, pistons, oil returns, lifters, PCV valve, and oil pump screen with High Energy Solvent Technology. Regular use ensures higher compression, fewer repairs, lower operation costs and increased spark plug and injector life.

During the winter, it keeps fuel from freezing; during the summer, it keeps water out of the gas line. In fact, this premium antifreeze absorbs up to 5 times more water than some other regular gas-line antifreeze products, helping your vehicle reach maximum efficiency in nearly all extreme heat or cold conditions.

At the same time, this additive cleans carburetors, fuel injectors and other engine parts, reducing the grime, rust and corrosion that can adversely affect fuel economy. The gas line antifreeze is fully compatible with almost all 2- and 4-cycle diesel or gas engines, making it a very flexible part of your vehicle maintenance routine.

With every treatment, the heavy blend of methanol and other additives sinks directly to the tank’s bottom, quickly absorbing water that can clog fuel lines or freeze gasoline.

Reduces rough idle, engine surge, hesitation, and spark plus fouling Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers) Improves cold start performance, and fuel stability for up to one year Restores lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor 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. ).

K100 fuel treatments are for all gasoline and diesel powered equipment and are formulated for use with all fuels including E-10, ULSD, Off-Road, bio-diesel and home-heating fuels. K-100 is a remarkable organic formulation that bonds itself to water and renders it completely burnable as fuel.

It is blended with an exclusive lucas additive package and specific carrier fluid that contains no diesel fuel, kerosene or anything else that can be harmful or useless to an engine. It also reduces emissions, eliminates the need for higher octane fuel and deep cleans the entire fuel system and combustion chamber.

Greatly reduces harmful nOx emissions. Removes carbon deposits. Totally eliminates knocking and pinging. Raises mpg and performance. Helps prolong and protect from fading, oxidation or tarnishing. It contains no acid, no ammonia so it’s safe for use on all metals.

Top selling fuel stabilizer now with more corrosion protection. Removes water, cleans carburetors and fuel injectors. Keeps fuel fresh for 12 months and eliminates the need to drain fuel before storage.

Cleans & lubricates carburetors, injectors and valve seats. Increase fuel economy and power. Decrease pinging, dieseling, emissions and hesitations. Treats one tank up to 25 gallons. 5. 25 oz. bottle.

Made in USA.

Max-Clean is a state-of-the-art fuel system treatment that cleans injectors, restores fuel economy and reduces both engine buildup and tailpipe emissions. Max-Clean?? s proprietary technology targets both the intake system and combustion chamber and is effective on the entire spectrum of engines on the road, whether they are new or old, gasoline or diesel, naturally aspirated, turbocharged or supercharged.

After multiple product fleet tests were conducted on various makes and models of vehicles, Royal Purple found that after, as little as one Max-Clean treatment can improve fuel economy an average of 3.

2 percent and increase horsepower an average of 2. 6 percent. Reduces Hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively). Prevents rough idle, hesitation and stalling. Prevents premature spark plug fouling.

Reduces deposit-related engine knocking and pinging. Deposit build-up is a natural consequence of fuel combustion, unfortunately these deposits can have a significant effect on the performance and reliability of your engine.

With Max-Clean, Royal Purple has developed a product that in most cases can bring engine surfaces back to like-new clean, restoring once-lost fuel economy and performance.

Even high-quality fuel can leave behind carbon deposits and corrosion from ethanol and water. Complete Fuel System Cleaner conditions fuel against corrosion to help extend the life of key engine parts, while using PEA (polyether-amine) to effectively remove deposits other products can’t, for maximized performance and fuel economy.

Size: 6 ounce 2X concentrated Maximizes fuel economy. Cleans the entire fuel system. Prevents future deposit build up Restores lost horse power. Removes water from gasoline. Cleans:Direct and indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, combustion chamber.

Conditions:Fuel to fight ethanol and water corrosion. Prevents:Future carbon buildup. Best for: Maximized performance and fuel economy in one fill-up, reduced emissions. Directions: Oxygen sensor safe.

Safe for use in turbocharged and supercharged vehicles. Add entire bottle to nearly empty gasoline tank, then fill tank with up to 21 gallons of gasoline. For best results, do not refill tank until near empty.

Use every 3,000 miles.

Lucas High Mileage Fuel Treatment is created specifically to restore lost power and performance in high-mileage vehicles. It cleans and lubricates fuel system components, removes valve deposits, lessens oil contamination and stops knocking and hesitation.

Additionally, Lucas High Mileage Fuel Treatment works great in modern port-injected engines – maintaining maximum flow and providing lubrication to critical parts. Contains No Alchohol. Oxygen Sensor Safe.

For use in diesel motor vehicles, locomotive, off road and marine diesel equipment engines. Contains no solvents. Designed to increase power and fuel mileage and lower exhaust emissions through a more complete combustion process.

Formulated for both gasoline and diesel engines, carbureted or fuel injected. A blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency.

It cleans and lubricates the carburetor and injectors and increases power while reducing fuel consumption. Should be used in vehicles that require leaded fuel because it replaces the benefits of lead in gasoline without causing harmful emissions.

Increases the life of pumps and injectors. Recommended dosage is 2-3 ounces of fuel treatment per 10 gallons of fuel.

This Gumout All-in-One Fuel System Cleaner will keep your vehicle operating smoothly with a special blend of ingredients. It can help to improve your gas mileage, so you can drive longer between fills.

The Gumout fuel system cleaner can help prevent future deposit build-up, keeping your system working just as desired. It will even remove water from your gasoline. The cleaner acts as a lubricant to keep the parts of your car working properly.

The cleansing effect on injector deposits can raise fuel economy approximately 12% or even greater, depending on the condition of the injectors. SI-1 also contains detergents and a synthetic upper cylinder lubricant which will help clean pollution control valves and can reduce octane requirements by two numbers.

SI-1 also protects the fuel system from rust. Use one bottle with a full tank or use in smaller doses for continued maintenance, as SI-1 treats up to 100 gallons. Safe for continual use.

Keep your engine running at peak efficiency and increase gas mileage with STP Ultra 5-In-1 Fuel System Cleaner (12-oz bottle). It deep-cleans the entire fuel system and helps to prevent ethanol deposits from building up.

This reduces corrosion and friction so your engine parts operate more smoothly and last longer. High-performance detergents and friction modifiers come together to form a one-source complete fuel system cleaner.

Contains concentrated detergents that help dissolve and remove harmful carbon, gum and varnish deposits on fuel injectors. Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling.

This product is made with Jet fuel, a high-quality carrier of active ingredients. This product is safe for all gasoline engines.

Amsoil Performance Improver Gasoline Additive improves fuel economy by reducing fuel injector deposits, intake valve deposits and combustion chamber deposits in 100% of the vehicles tested. It is formulated for both gasoline direct injected (GDI) and port fuel injected engines Treat one full tank of gas up to 20 gallons with one bottle of P.

i. For very large gas tanks, partially fill to 40 gallons and treat with two bottles of P. i. Using more than two bottles per treatment is not recommended. Treat gas every 4,000 miles of service (or 100 hours for marine, stationary and off-road gasoline-powered engines).

P. i. helps pass emission tests by running one tank of treated fuel through the engine prior to testing. Safe for use with catalytic converters, oxygen sensors, oxygenated gas and 10 percent ethanol blended gas.

Not recommended for two-cycle engines.