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Best Synthetic Fuel Additive

STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304) , Green

  • FIXES ROUGH RUNNING ENGINES – STA-BIL Fast Fix eats away at gum and varnish that cause rough starts and no starts in your small engine equipment. This easy-to-use fuel additive combats the effects of ethanol blended gasoline..
  • ELIMINATES WATER – This fuel injector cleaner helps to remove water that may get into your fuel system. Penetrating deep into the fuel line, this simple fuel additive prevents the need to disassemble the engine. The 8 oz. bottle of this alcohol-free fuel additive treats up to 20 gallons of fuel..
  • VERSATILE – Compatible with all small engines, adding STA-BIL Fast Fix to your 2-cycle or 4-cycle small engine cleans carburetors and injectors while acting as a water remover. Use this product in your lawn mower, chainsaw, trimmer, snow blower, generator, and more..
  • DIRECTIONS – For rough running engines use 1 oz. of STA-BIL Fast Fix per 2.5 gallons of fuel. Fill with fresh gas. Start the engine and allow to run for 15 minutes to allow the additive to work its way through the fuel system. If the engine does not start, attempt to turn it over a few times so the additive makes its way through the fuel system and allow to sit overnight. Attempt to start again, if problems persist you may need to have it looked at by a mechanic..
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Kendall Oil 1074961 10w30 GT-1 Synthetic Blend, 1 Quart, 1 Pack

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual..
  • Performance additive package fortified with our exclusive Liquid Titanium protection additive for extra wear protection and improved fuel savings.
  • Formulated with a blend of synthetic and conventional base stocks.
  • Provides enhanced oxidation resistance and thermal stability at high temperatures.
  • Better pump ability at low temperatures compared with conventional engine oils, for extra protection under all driving conditions.
  • Provides increased engine protection by forming a strongly bonded titanium shield on the surface of critical engine parts.
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Opti-Lube XPD Formula Diesel Fuel Additive: 8oz 6 Pack, Treats up to 32 Gallons per 8oz Bottle

  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition and the tools in the toolbox. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less..
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XPD formula. This diesel fuel additive has been shown to enhance fuel mileage year round, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for both summer and winter driving..
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine usually doesn’t run as efficiently. Opti-Lube XPD formula cleans injectors while helping prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape..
  • ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XPD formula delivers. It works to improve the performance of your truck all y....
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Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive: 5 Gallon Pail Without Accessories Treats up to 6,400 Gallons

  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less..
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XL Xtreme Lubricant formula. This diesel fuel additive has been shown to enhance fuel mileage, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for summer driving..
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine doesn’t run as efficiently. Opti-Lube XL Xtreme Lubricant formula cleans injectors and helps prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape..
  • ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XL Xtreme Lubricant formula delivers. It works to improve the performance of your truck all year round. This fuel....
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VP Racing Fuels 2835 Madditive Diesel All-In-One Fuel Conditioner - 24 oz. Cleans Injectors & Pumps Restores power Disperses Water Reduces Smoking

  • VP DIESEL ALL-IN-ONE is EPA-registered and 100% street legal. It takes away the guesswork of figuring out which additive is the right one for you.
  • Increases diesel stability, cleans fuel system, pumps, and injectors while restoring power. Helps alleviate diesel "knock" by boosting cetane nearly two FULL numbers, keeping engine smooth and quiet.
  • TESTING (ASTM-D2274) show 85% LESS gum and sediment deposits in fuel treated w/ Diesel All-In-One. Received highest grade for corrosion protection (ASTM-D130) & corrosion resistance (NACE Intl. test).
  • DISPERSES water, reduces smoking, cleans sludge deposits, protects against biodiesel components, increases fuel mileage, & includes anti-gel additive to help keep fuel flowing in cold winter months.
  • Choosing the right diesel fuel additive is tough. Low-sulfur diesel is better for the environment, but comes at the cost of lubrication that diesel engines need, which is where an additive can help.
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Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive: 1 Gallon with Accessories (HDPE Plastic Hand Pump and 2 Empty 4oz Bottles) Treats up to 1,280 Gallons

  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less..
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XL Xtreme Lubricant formula. This diesel fuel additive has been shown to enhance fuel mileage, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for summer driving..
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine doesn’t run as efficiently. Opti-Lube XL Xtreme Lubricant formula cleans injectors and helps prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape..
  • ENHANCES PERFORMANCE: Whether during rain, snow, o....
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Opti-Lube XPD Formula Diesel Fuel Additive: 1 Gallon with Accessories (HDPE Plastic Hand Pump and 2 Empty 8oz Bottles) Treats up to 512 Gallons

  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition and the tools in the toolbox. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less..
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XPD formula. This diesel fuel additive has been shown to enhance fuel mileage year round, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for both summer and winter driving..
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine usually doesn’t run as efficiently. Opti-Lube XPD formula cleans injectors while helping prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape..
  • ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XPD formula delivers. It works to improve the performance of your truck all y....
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Gumout 510019 Fuel Injector Cleaner, 6 oz. (Pack of 6)

  • Two 5.25 fl oz bottles of STP Super Concentrated Fuel Injector Cleaner.
  • Fuel additive contains concentrated detergents for effective car care.
  • Dissolves and removes carbon, gum and varnish deposits that can be harmful to fuel injectors.
  • Jet fuel works as a carrier to deliver the active ingredients effectively.
  • STP fuel injector cleaner helps to prevent hard stops, lost acceleration and rough idling and helps save gas.
  • Use this additive with every oil change or every 4,000 miles.
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Sea Foam SF-16-12PK Motor Treatment - 16 oz, (Case of 12)

  • As a fuel system additive, Sea Foam will help clean carburetor jets, fuel injectors, clean carbon, gum and varnish deposits, add lubricity to fuel, stabilize fuel for 2 years and control moisture.
  • As an oil system additive, Sea Foam helps remove moisture, varnish and oil residue deposits.
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Synthetic Engine Oil Treatment Additive Universally Compatible Performance Enhancing Reverses Engine Wear and Increases Vehicle Life and Mileage 8 Fl Oz by SHINE ARMOR

  • ...el engines alike. It takes the properties of your host oil to the next level while preventing rust, oxidation & reduce friction..
  • Groundbreaking Formula Gear Oil. This revolutionary engine oil additive is eco friendly, made in the USA and contains scientifically backed synthetic oil nanoparticles to boost engine performance..
  • Universally Compatible. Our Engine Performance Booster oil treatment can be used in both gas and diesel engines, and old and new cars. Shine Armor's Oil Additive is compatible with all types of motor oil & engine oil like 5w30, 0w-20, 10w30, 5w20, 15w40 & more..
  • Quality Assured. We know you will be delighted with this ground-breaking engine additive technology. Our oil additive treatment is formulated using the latest technology and backwards-compatible with all vehicles..
  • Quick & Easy to Use. Effective in small two-cycle engines just add Performance Booster to the oil before mixing it with fuel. Use it to treat any oil lubricated system except air conditioning & aircraft. Use Performance Booster Oil Additive after getting a fresh oil chang....
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Liqui Moly 2041 Premium 5W-40 Synthetic Motor Oil - 5 Liter

  • Made from Pennzoil's patented gas-to-liquid PurePlus Technology combined with a high-performance additive system for complete protection.
  • Full synthetic 0W-30 motor oil formulated for diesel and gasoline engines and is approved for most Mercedes-Benz, VW, Audi, and Porsche vehicles.
  • Helps keep diesel particulate filters clean and protects the from ash build-up that can block the exhaust system and lead to reduced engine performance.
  • Provides superior piston cleanliness (up to 45% cleaner, based on DV4TD vs. ACEA C2/Ce using SAE 0W-30 ).
  • Provides up to 2.6% better fuel economy (based on ACEA M111 fuel economy results vs. the industry reference oil).
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Opti-Lube XPD Formula Diesel Fuel Additive: Quarts (1 Quart (Treats 128 Gallons))

  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition and the tools in the toolbox. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less..
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XPD formula. This diesel fuel additive has been shown to enhance fuel mileage year round, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for both summer and winter driving..
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine usually doesn’t run as efficiently. Opti-Lube XPD formula cleans injectors while helping prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape..
  • ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XPD formula delivers. It works to improve the performance of your truck all y....
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Sea Foam IC5 Fuel Injector Cleaner, 5.25 oz

  • Treats Up To 25 Gallons ps, lost acceleration and rough idling for improved performance.
  • Jet fuel serves as the carrier for the active ingredien Helps Recover Lost Mpg And Reduce Exhaust Emissionst nts, creating a high-quality additive for easy auto care.
  • Add this fuel injector treatment to your vehicle regularly when you fill your gas tank Friction modifier in the fuel additive combats upper cylinder friction.
  • The product is 5, 25 oz, 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.
  • Cleans fuel injectors, intake valves and ports to restore performance, fuel economy and prevents future carbon build-up, which reduces emissions.
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