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Best Lawn Mower Additives

Rank No. #1
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304)
  • 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.
  • SHELF LIFE – All STA-BIL branded products are good for use up to 2 years after the bottle was opened. Be sure to mark the date you opened the bottle on the back of your package! Proudly made in the USA by a family-owned company in Chicago, Illinois.
Rank No. #2
STA-BIL Small Engine Pro Multi-System Additive - Protects Against Ethanol - Cleans Carb And Injectors - Improves Engine Efficiency - Lubricates Valves And Pistons, 16 fl. oz. (22305) , Red
  • Clean and improve your fuel system with Small Engine Pro, a gasoline/oil additive that helps restore lost engine power and performance, by cleaning out gum and varnish
  • Keeps internal engine components lubricated and free, providing longevity to internal engine parts
  • With optimal lubrication and cleaning, this formula effectively quiets noisy engines
  • Protects Against Ethanol - Corrosion Inhibitors provide the ultimate protection against the harmful effects of Ethanol
  • Safe for use in all gas powered small engine equipment including lawn mowers, trimmers, chainsaws, pressure washers, edgers, snow blowers, generators and more!
SaleRank No. #3
Star brite Star Tron Gasoline Additive (8 oz)
  • ENZYME FUEL TREATMENT – Star Tron Enzyme Fuel Treatment Concentrate improves the combustibility of all fuel - meaning more power and better fuel economy. It keeps working to clean your fuel delivery system, so your engines start easily and run strong.
  • STABILIZES FUEL FOR UP TO 2 YEARS – This fuel additive is ideal for everyday use and seasonal storage. It can stabilize fuel for up to 2 years and can help rejuvenate old, sub-spec fuel.
  • MAX PERFORMANCE – This gasoline stabilizer helps improve MPG, eliminate black soot and exhaust stains, reduce emissions, remove carbon build-up, and eliminate and prevent ethanol fuel problems for maximum performance.
  • VERSATILE – This revolutionary fuel stabilizer utilizes enzyme technology to enhance the performance of boats, automobiles, trucks, RVs, tractors, farm equipment, generators, lawnmowers, lawn equipment, oil burning furnaces and all other small engines.
  • SAFE FOR ALL ENGINES – Star Tron Enzyme Fuel Treatment concentrated formula #930XX is economical to use in large and small applications. It works with ethanol fuel and is safe for use in all engines (including 2-cycle pre-mix).
Rank No. #4
STA-BIL Storage Fuel Stabilizer - Guaranteed To Keep Fuel Fresh Fuel Up To Two Years - Effective In All Gasoline Including All Ethanol Blended Fuels - For Quick, Easy Starts, 4 fl. oz. (22205)
  • Keeps fuel fresh for up to 24 months during storage
  • Eliminates the need to drain fuel prior to storage
  • Ensures quick, easy starts after storage
  • Prevents gum and varnish build-up
  • Effective in all gasoline, including Ethanol blends
SaleRank No. #5
STA-BIL 360 Protection Ethanol Treatment And Fuel Stabilizer - Prevents Corrosion - Prevents Ethanol Damage - Cleans Entire Fuel System - Treats 50 Gallons, 10 fl. oz. (22264)
  • America's #1 Ethanol Treatment
  • Prevents corrosion caused by ethanol blended fuels
  • Increases engine power and efficiency
  • Effective in ethanol and non-ethanol blended fuels
  • Engineered for year round usage.
Rank No. #6
STAR BRITE Star Tron Enzyme Fuel Treatment SEF Gasoline Formula - 1 oz. Treats 6 Gallons - 8 OZ (14308SS)(FFP Certified)
  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • For everyday use and seasonal storage; stabilizes fuel for up to 2 years and can help rejuvenate old, sub-spec fuel
  • Makes engines start easily and run smoothly; improves fuel economy and reduces emissions
  • Cleans valves and injectors of carbon deposits, gums and varnish for maximum performance, increased fuel efficiency and reduced emissions
  • Small Engine/Automotive Formula 143XX is easy to mix in fuel tanks under 48 gallons; safe for use in all engines (including 2-cycle pre-mix)
SaleRank No. #7
Sea Foam SF-16 Motor Treatment - 16 oz. , white
  • The product is sf16 16oz motor tune up
  • Easy and simple use kit
  • 100 percent pure petroleum
  • Pea registered product
  • Liquefies gum and varnish deposits or internal engine contaminants
SaleRank No. #9
Berryman Products 0116 B-12 Chemtool Carburetor, Fuel System and Injector Cleaner, 15 Ounce, (Single Unit)
  • Contains 100% High-Energy Solvent Technology
  • Helps Keep Injectors Or Carb(S) And Intake Ports And Valves Clean
  • Quickly Disperses Moisture And Dissolves Gum, Varnish, And Other Fuel Residues
  • Disperses Moisture In Conventional Gasoline
  • Quickly disperses moisture and dissolves gum, varnish, and other fuel residues
Rank No. #10
STA-BIL Start Your Engines! - Fixes Non-Running Engines - A Jump Start In A Can - Revitalizes Fuel System - Safe For 2 And 4-Cycle Engines - Ensures Quick, Easy Starts, 2 fl. oz. (21214)
  • Additive ensures quick easy starts after extended storage
  • Ensures smooth idling and performance in season
  • For all 2 and 4-cycle small engines
  • Revitalizes fuel and the entire fuel system
  • Made in the U.S.A.

Last update on 2022-05-17 / Affiliate links / Images from Amazon Product Advertising API. BonusBox - As an Amazon Associate we earn from qualifying purchases.

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We have assembled an experienced team of writers, researchers, editors, experts, and testers around the world to research Lawn Mower Additives and write unbiased reviews.

 

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We conduct in-depth research and data analysis to come up with the topics we choose to review. Our review writers then spend hours researching the topic, choosing the best Lawn Mower Additives or companies (up to five for each topic) that work best for the most common consumer. We then assign a “Best of the Best” pick – which is the standout choice for most consumers who want the very best and don’t mind spending more, and a “Best Bang for the Buck” pick – which is less expensive but still a great choice for quality and value.

 

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We donate many of our Lawn Mower Additives to local nonprofit organizations after reviewing and testing them.

 

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You Didn’t Pick The Product I Like Best – Why?

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