9 best gasoline fuel additive

Gasoline fuel additives, similar to diesel additives, are chemical substances added to gasoline to enhance its performance and address various issues related to fuel quality, engine efficiency, and emissions. These additives are designed to improve the overall functioning of the fuel and the engine. Here are some common aspects of gasoline fuel additives:

  1. Octane Boosters: One of the primary purposes of gasoline additives is to increase the octane rating of the fuel. Higher octane gasoline can prevent engine knocking and pinging, especially in high-performance or turbocharged engines.

  2. Fuel Stabilizers: Fuel stabilizers are used to prevent the degradation of gasoline over time, which can happen due to exposure to air and moisture. Stabilizers help maintain fuel quality during storage, which is crucial for seasonal equipment like lawnmowers and boats.

  3. Cleaners: Gasoline additives often contain detergents and cleaning agents that help keep the fuel system and engine components clean. They can reduce carbon deposits on fuel injectors, intake valves, and combustion chambers, which can improve fuel efficiency and reduce emissions.

  4. Corrosion Inhibitors: Some additives include corrosion inhibitors to protect the fuel system components from rust and corrosion, particularly in older vehicles or in regions with high humidity.

  5. Emissions Reduction: Certain gasoline additives can help reduce harmful emissions, such as nitrogen oxides (NOx) and carbon monoxide (CO), by promoting more complete combustion.

  6. Ethanol Treatment: Gasoline with ethanol can lead to issues like phase separation and water absorption.Additives can address these problems and prevent damage to engines and fuel systems.

  7. Improved Performance: Some gasoline additives claim to enhance engine performance, including increased power and fuel efficiency. However, the effectiveness of these claims may vary.

  8. Winterization: In colder climates, gasoline additives may include anti-gelling agents to prevent the formation of wax crystals in the fuel, which can clog fuel filters and lines in cold weather.

It's important to note that not all vehicles require gasoline additives, and the need for specific additives can vary based on factors like the vehicle's age, the quality of gasoline available, and environmental conditions. Before using any gasoline additive, it's advisable to consult your vehicle's owner's manual and follow the manufacturer's recommendations. Additionally, using additives that are not recommended for your vehicle can sometimes have adverse effects, so it's essential to make informed choices.

Always follow safety precautions and guidelines when handling gasoline and its additives, and store them in a safe and well-ventilated area away from heat sources and open flames.

Below you can find our editor's choice of the best gasoline fuel additive on the market
  

LUCAS LUC10013 10013 Fuel Treatment - 1 Gallon

LUCAS

Based on 4 reviews Check latest price

Product description

Lucas Fuel Treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected. It gives your fuel system what it really needs - a blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency. Also, it cleans and lubricates the carburetor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption. Lucas Fuel Treatment should definitely be used in vehicles that require leaded fuel because it actually replaces the benefits of lead in gasoline without causing harmful emissions. Use it to pass smog tests. Finally, it totally neutralizes the harmful effects of low sulfur diesel fuel.

  • Fit Type: Vehicle Specific
  • Package Dimensions: 7.23 L x 4.93 H x 5.75 W (inches)
  • Package Weight : 8 pounds
  • Country of Origin : United States

User questions & answers

Question: Anyone using this to negate ethanol damage or are you using their other ethanol treatment
Answer: NO, this is not the product for that. You need the Lucas Oil Safeguard ethanol fuel treatment.
Question: Is this a concentrate
Answer: Yes, 3 oz. per 10 gal. of gas. You do not add anything to the fuel treatment.
Question: Would keeping this in the car in hot Texas heat be an issue
Answer: I use it in almost every fill up on my truck. F150 in SoCal heat.
Question: Will gas mileage increase
Answer: I drive (and now use this in) a 1996 Toyota 4Runner. Prior to its use I'd averaged 17mpg, then performed a replacement on plugs, wires, and air filter (upgrading to a K&N); in addition to cleaning the MAF and throttle body (all on my own, mind you!). I now average anywhere between 19.5 (city) and just under 25 (highway). I'm not sure just how much of a fuel increase can be contributed to this product, but I no longer go without it!

Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz.

Chevron

Based on 5 reviews Check latest price

Product description

Chevron Techron fuel system cleaner is unbeatable in cleaning the entire fuel system and restoring lost power and performance caused by deposit build-up. - Cleans deposits from fuel injectors, carburetors, ports, valves and combustion chambers- works in one tankful while you drive to reduce deposit related engine knock, ping, run-on, and cold start problems- recommended for use every 3,000 miles- 20 oz. bottle.

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

User questions & answers

Question: Do people really use this every 3,000 miles? How often do you do it
Answer: Techron has a web site and a contact number to call. Unless someone has opened up the engine block and tested how this additive performs, they are just guessing. Granted, Techron may just be trying to sell you something that you do not need, or need every 3,000 miles.
Question: it's a real pain to open Techron bottle's seal. do you guys have any tips on opening it easily
Answer: Don't try to peel it off. Just pierce it through the center (not at the edge) with a sharp pointed blade, like one on a little Swiss Army keychain knife. Leave the slit alone and don't try to peel any of the seal off. If you just pierce it in the center and don't try to pull off or peel any pieces it will remain intact and tightly adhere to the bottle neck and thus continue to provide an effective seal when you close the cap.
Question: I found an old unopened bottle of the original concentrate, not the Plus. Probably 10 years old. Is it still OK to use
Answer: Yes, its fine to use. The ingredients don't go bad for maybe 20 plus years or more
Question: Is there any reason why after using this that I should also use Chevron's fuel injector cleaner or does this do the same thing
Answer: Both products contain the same cleaning additive (polyetheramine), the "fuel injector cleaner" just contains slightly less (and is usually slightly cheaper) than the "fuel system cleaner".

Product features

Optimize your MPG

Every time you fill your tank, you expect to drive a certain amount of miles on it. An engine that's caked with deposits makes your engine work harder - less efficiently - every mile. So next time use Techron Concentrate Plus to help ensure maximum fuel economy.

Keep it Clean

Fact is, gasoline is a mixture of hydrocarbons including ethanol and other impurities. As it travels through your car's fuel system, harmful carbon deposits can form on critical engine parts. Techron helps remove these deposits, restoring lost power and performance.

What is Techron?

Techron is an additive technology that works to get the most out of your engine thanks to our patented fuel additive technology which is trusted by motorists, mechanics and auto manufacturers the world over. You can use Techron and when you do it will clean your engine, leading to better performance, lower emissions and maximum fuel economy.

What does it do?

Engines are designed to work at their best when they are clean and modern engines are designed to work with finer tolerances and at higher temperatures. Techron works molecule by molecule to prevent deposit formation, and in the case of deposits left behind by low quality gasoline, works to remove those deposits.

How does it work?

Techron is proven to be effective at keeping both modern and older engines clean. The result is maximum power, lower emissions and maximized fuel economy. There have been significant advances in engine design including hybrid and direct injection spark ignition technologies. These engines are designed to work at their best when they are clean. Even microscopic amounts of engine deposits can adversely affect performance.

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, 16 fl. oz. (22207)

STA-BIL

Based on 2 reviews Check latest price

Product description

Storing fuel for more than a year? Have a generator or piece of equipment you don’t know the next time you will use it? Have no worries STA-BIL Storage is an additive meant just for what you’re looking for. STA-BIL Storage keeps gas fresh for up to 24 months. This eliminates the need to drain fuel before storing your equipment and ensures quick easy starts the next time you go to fire it up. This product is highly effective in all gasoline including ethanol and non-ethanol blended fuels. Whether using 87, 91, or 93 octane gas ethanol or non-ethanol blended gas still goes bad. This product is great for bulk gas storage as well as collector cars, small engines, generators, and boats. Treat rate is 1oz to 2 ½ gallons of gas. If using with small engine equipment it is best to add STA-BIL Storage to your gas can. This way every piece of equipment you fill with that can is treated. Make sure to add STA-BIL while the gas is fresh. Best practice is to add STA-BIL when you are at the pump. STA-BIL is proudly made in the USA.

  • Keeps fuel fresh for up to 24 months during storage
  • Eliminates need to drain fuel prior to storage
  • Ensures quick, easy starts after storage
  • Effective in all gasoline, including ethanol blends
  • For all gasoline engines, including 2-cycle
  • Fit type: Universal Fit

User questions & answers

Question: can it be used after gas has sat in a tank for years of none use or is it to late to use
Answer: The best way to use it is to do it right when you store a vehicle. You should probably drain the gas and start fresh if you have been sitting for years.
Question: Can i put sta-bill in a 300 gallon tank that is already full of gas? i have no way to agitate it once i add the sta-bill
Answer: Yes. You can simply add the recommended amount to the fuel. Shaking, mixing, or agitating is not necessary, as STA-BIL Storage will dilute itself into the fuel. Hope that helps. If there are any questions, please feel free to contact us at [email protected]. Thanks for the question!
Question: I have stored gas in gas cans for about a year and a half wheel this product be good for the situation
Answer: Ron, you must use Sta-bil before you store the gas. It will keep gas fresh for one year. If you double the dosage it will work for two years.
Question: Can this be used year round, even while running the mower
Answer: Hi. Thanks for the question. Yes, you can certainly use STA-BIL all year-round as it does help in keeping the fuel system clean and the fuel as fresh as possible while in use. If there are any questions, please feel free to contact us at [email protected].

Product features

STA-BIL Storage Fuel Stabilizer

Store fuel for more than a year? Have a generator or piece of equipment that you aren't sure when it'll get used again? Have no worries because STA-BIL Storage is an additive for all of those uses. STA-BIL Storage keeps gas fresh for up to 24 months. This eliminates the need to drain fuel before storing your equipment and ensures quick easy starts the next time you go to start your engine. This product is highly effective in all gas including ethanol and non-ethanol blended fuels. Whether using 87, 91, or 93 octane gas ethanol or non-ethanol blended gas still goes bad. This product is great for bulk gas storage as well as collector cars, small engines, generators, & boats. Treat rate is 1oz to 2½ gallons of gas. If using with small engine equipment it is best to add STA-BIL Storage to your gas can. This way every piece of equipment you fill with that can is treated. Make sure to add STA-BIL while the gas is fresh. Best practice is to add STA-BIL when you are at the pump.

K-100 MG All-in-One Gasoline Fuel Treatment & Additive - Eliminates Water, Stabilizes Fuel, and Cleans Engine & Fuel Systems – 32 oz. (K100-G)

K-100

Based on 311 reviews Check latest price

Product description

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. K100 is a remarkable organic formulation that bonds itself to water and renders it completely burnable as fuel, eliminating water and water related problems! Water reduces the heat of combustion which means more smoke, less power, hard starting, rough idle, poor mileage, and winter freeze-ups. Use K100 Fuel Treatment regularly so your engine will run cleaner, run stronger and run longer with better overall engine efficiency. K100 burns cleanly and completely with no ash deposits while also dissolving gums and varnishes. MG also revitalizes fuel and stabilizes for extended storage.

  • New
  • Flash point: 40.5
  • Part number: K100-MG32
  • Package Dimensions: 8.128 L x 25.654 H x 8.382 W (centimeters)

User questions & answers

Question: Hi, I've typically used the light green labeled bottle with yellow & white lettering. K100 MG. Yours looks like its a different product. Pls advise
Answer: The MG is the marine version. Same thing just heavier duty.
Question: How much K-100 MG should I use in a 3.5 gallon motorcycle tank for the first time, and how much for each fill-up after that
Answer: There are specific measurements on the bottle. Right off the top of my head I'd say a couple cap fulls the first time and one cap after that. Does not hurt anything to add more though.
Question: Does this product have alcohol in it? Sounds stupid but many of these products are mostly alcohol
Answer: It has butyl cellosolve which is a solvent. Not sure if alcohol is one of the products that are included but K100 definitely works.
Question: What is the shelf life
Answer: unknown check mfg web site or call them.. so far we have had for 6 months and still good.. This does work for ethanol related problems, fixed 2 different snowmobile carburetor build up problems and a boat motor carburetor issue. Run it through a couple times(possibly more) but it will clear up issue..

Red Line (60103) Complete SI-1 Fuel System Cleaner - Gas and Injector Additive Treatment - 15 Oz Bottle

Red Line

Based on 2 reviews Check latest price

Product description

Fuel Additives: All Red Line fuel additives are comprised of the best chemistry for cleaning and preventing corrosion in fuel systems. They are designed to significantly improve performance and exceed expectations. Since 1979 In 1979, Red Line Synthetic Oil began creating lubricants for the racing industry. Today, we manufacture more than 100 quality products, including motor oils, gear oils, assembly lubes, fuel additives and our popular Water Wetter cooling additive for the automotive, motorcycle, marine and industrial markets. Technology Using cutting edge technology, Red Line responds to the technical challenges of today’s performance industry. We are enthusiasts that stay on top of each market niche, ensuring product recommendations that result in serious performance gains. We use this knowledge of racing to create high-performance products for track cars and street vehicles. Red Line products perform and protect better than any on the market. No compromises.

  • 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 build up 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

User questions & answers

Question: diesel engine, LPG engine all use
Answer: I would not recommend this for diesel engines, and would definitely not use it for an LPG-fueled engine.
Question: Will this Redline product damage my 02 sensors with LONG TERM use? No one seems to address this issue
Answer: 20 year auto tech. No. The O2 sensors are designed to detect changes in fuel. Specificly the air/fuel ratio. They are not as fragile as most people think. They in no way could be damaged by using this product. This is actually the only thing I use and can highly recommend when it comes to fuel additives.
Question: Is this product better than the much cheaper STP fuel cleaner
Answer: I'll tell you this the difference being only a few dollars considering this product is in the $10 range I wouldn't bother trying anything else. I'll admit I've never tried any other product, but 2,200 mile after the first use I still see a node improvement in the fuel economy and have the smooth acceleration. I'll he sticking to the every 5k recommended use. Hope this helps
Question: Can u detail the procedure how to use this product
Answer: Hold bottle in left hand. with right hand, twist cap counter clockwise. Break foil seal on bottle. (if you smoke, put the cigarette out before proceeding further)open gas tank door. remove gas cap (place in a location you remember to reinstall later.)Pour contents into gas tank. Replace gas cap. Drive as normal and it will clean injectors up as you drive. Enjoy a beer (AFTER you drive with enough time in between to sober up.)Call the fellas up and stand around drinking beer while admiring a fine product from Redline. (PEA is the main thing you want to clean things up, which Redline and Techron have the most)//I hope that is detailed enough\\

Product features

Red Line Complete SI-1 Fuel System Cleaner

  • Cleans injectors, carburetors, valve and combustion chamber deposits with a concentrated blend of the most powerful high-temp and low-temp detergents available
  • Cleans all forms of fuel injectors, including GDI
  • Enhances fuel stability; reduces gum and varnish formation
  • Use one bottle per tank for most effective treatment
  • Reduces need for octane by up to two points
  • Contains synthetic upper cylinder lubricant
  • Cleans pollution control valves
  • Suitable for use with oxygenated fuel
  • Safe for continual use

K100 MG Gasoline Treatment with Stabilizer - 12/8 oz. case

K100

Based on 47 reviews Check latest price

Product description

K100 MG - Make Water Burn K100 MG Gasoline Treatment with Enhanced Stabilizers is a proprietary formulation of complex organic compounds developed primarily to eliminate moisture contamination in Gasoline, with additives to improve the cleaning effect and cold temperature operation, increase lubricity and shelf-life of the fuel, and modify the fuel itself to increase atomization and improve the fuel/energy conversion process. K100 G Gasoline Treatment helps eliminate the water issues associated with using Ethanol Blended Fuels. E-10 gasoline absorbs moisture from the air and if enough water is present will phase separate. 40-80% of the ethanol will be drawn away from the gasoline, forming two distinct layers. The top layer is gasoline with a lower octane, while the bottom layer is a mix of water and ethanol that will not burn. This may ruin the carburetor or injector pumps and make an engine difficult or impossible to start. In a 10% ethanol blend, 18 gallons of water in a 6,000 gallon tank can cause phase separation. K100’s unique bio-based (green) chemistry eliminates all free water, which eliminates all water-related problems including microbe growth in diesel and bio-diesel fuels and phase separation in E-10. K100 encapsulates water - ounce for ounce, gallon for gallon - and makes it burn. Used regularly, K100 upgrades fuel quality and promotes more complete combustion for reduced emissions, better mileage, easier starts, smoother idle, more power and faster acceleration. K100 MG Gasoline Treatment with Enhanced Stabilizers also CLEANS! K100 Treatments modify the petroleum molecule, altering the burn chemistry for more complete combustion which results in more power, better mileage and a cleaner environment. K100 MG Gasoline Treatment with Enhanced Stabilizers SAVES MONEY!

  • Eliminates water and water-related problems,
  • Prevent and/or rectify Fuel Phase Separation
  • Improves engine efficiency for more miles/gallon/hour
  • Eliminates freeze-ups that block fuel lines and filters
  • Eliminates free water for easier starting, smoother idle, more power, better acceleration

User questions & answers

Question: Is this the new mg+ formula
Answer: Yes, at least. This is an old company that has been around a loooong time. Their lighters are always my first choice.
Question: How many bottles in this package
Answer: It's triple filtered

Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats 512 Gallons

STAR BRITE

Based on 462 reviews Check latest price

Product description

Star Tron Enzyme Fuel Treatment is a multifunctional fuel additive which uses a unique enzyme technology that allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months.

Star Tron® eliminates and prevents ethanol fuel problems. Star Tron breaks down excess water and sludge to sub-micron size, allowing it to be safely burned away during normal engine operation which helps prevent phase separation.

Star Tron® increases fuel economy by cleaning the entire fuel delivery system, removing performance robbing gum and varnish deposits while modifying how fuel burns. This results in more complete and uniform combustion, maximum performance, increased fuel efficiency, reduced emissions and reliable operation.

Star Tron will stabilize fuel for up to two years, preventing the formation of gums and other solids that clog carburetors and fuel injectors. Star Tron can help rejuvenate old and sub-spec fuel.

Star Tron can be used in all gas outboards, inboards, cars, trucks, motorcycles, ATVS, snowmobiles, small engines, outdoor power equipment including pre-mix fuel engines. Star Tron is safe for all engines and overdosing is not harmful.

Available in three convenient concentrations.

• 143XX Small Engine Formula – Each oz. treats up to 6 gallons of fuel.

• 930XX Concentrate Formula- Each oz. treats up to 16 gallons of fuel.

• 14501 Super Concentrate 1 oz. Single Dose Shooter treats up to 25 gallons of fuel.

  • Item Package Dimension:10.08 Inches L X4.07 Inches W X2.52 Inches H
  • Item Package Weight:2.5 Pounds
  • Product Type:Fishing Equipment
  • Country Of Origin: China

User questions & answers

Question: How long does it take for this to work? I have a new snowblower (only 2 storms and then put up for summer and now won't start) I put in new gas
Answer: I put this fuel treatment in my 2 cars, my motorcycle and my gas cans that are used for mowers and snowblower. Now, I broke down how much to use for each size gas tank of cars and M.C. Your concerned about your snowblower. So a 5 gallon empty gas can that I USE takes( U do the math as my figures are in the garage and 10inches of snow is outside, sorry) ) Its simple if you get a graduated eye dropper and put your eye dropper into the star Tron and take out the exact amount you figured out and put into the gas can. Fill up the 5 gallon can with gas and it's good for 2years and use in you snowblower, mowers and other 4cycle engines. Doing this you will protect all your engines if you want to protect against harm from the ethanol that we are forced to use. You snow blower will show improvement immediately if the gas is the only problem. I use high test in that gas can right now as I was having trouble with my snow blower because of what ever gas the dealer used. It smelled like old gas in my new snow blower. After I put the new gas from my 5gallon can it ran perfect today in the 10inches we got. Ok fella. It's your choice once in awhile or continued use.
Question: Expiration date
Answer: There's no expiration date!! Use now or in 12 months, still work in any condition!! I've been using this product for about 20 years. Use as Directed!
Question: Tell me about star brite fuel additive
Answer: If you have any small gasoline powered equipment such as hedge trimmer, chain saw, weed wacker, etc, you must, MUST use this type of additive to counter the damaging effects of ethanol in your gas. I found Star Brite to be both easy to use and totally effective. I also use premium gas in my higher end stuff like Sthil.
Question: what does it do
Answer: it stops the negative effects of ethanol in the fuel. The company has a very good website with detailed explanation of how it works. I recommend checking it out. Just Google to find the site.

JEGS Pina Colada Fuel Fragrance | 4 Ounce Bottle | Compatible With Gasoline, Alcohol, Methanol, Nitromethane, and Diesel Fuels

Based on 2 reviews Check latest price

Product description

Fuel Fragrance

  • Pina Colada Scented
  • 4 oz. Bottle
  • Safe for All Internal Combustion Engines, Injectors, Carburetors, Oxygen Sensors & Catalytic Converters

    Do you like the sweet smell of coconut and pineapple? JEGS offers Pina Colada Fuel Fragrance to sweeten up the scent of your exhaust fumes. The 4 oz. bottle of additive isn’t topped with a cherry, but it is safe to add straight to your tank and will not inhibit engine performance.

    Usage:

  • Gasoline -1/3 to 1/4 oz. per gallon
  • Methanol - 1/8 to 1/16 oz. per gallon 
  • Diesel fuel -1/2 to 1/4 oz. per gallon 
    • ADD A DISTINCTIVE SMELL TO YOUR EXHAUST FUMES and eliminate unpleasant odor
    • HIGHLY CONCENTRATED AND SAFE for all internal combustion engines, carburetors, oxygen sensors, and catalytic converters
    • WILL NOT RESTRICT OR BOOST ENGINE PERFORMANCE for peace of mind
    • ADDS A PLEASANT AROMA WITH 4 OUNCES to 12-20 gallons of gasoline or nitro methane, 28-55 gallons of alcohol or methanol, or 8-16 gallons of diesel fuel
    • GET NOTICED at the track or on the street with a variety of scents to choose from

    Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner - 300 ml

    Liqui Moly

    Based on 1 reviews Check latest price

    Product description

    Cleans contaminated petrol injection systems, removes carbon deposits and deposits from fuel pipes, fuel distributors, injection and inlet valves; therefore, no starting problems and no lean surging, smoother idling, good throttle response, low-pollution, and environmentally compatible combustion. Promotes accurate injector dosing and fuel atomization: Your engine regains its original performance. Fuel consumption is reduced. Especially suitable for engines with catalytic converters.

    • Eliminates starting problems, hesitation and stalling
    • Smoother idling
    • Better throttle response
    • Cleaner combustion

    User questions & answers

    Question: Here's a question: What is the difference between a fuel injector cleaner and a fuel system cleaner? Don't they all go through the same paths
    Answer: This is also why it is a good idea to follow this treatment with the fuel system cleaner so the injector cleaner is flushed from the fuel system.
    Question: do I use this every 3 months
    Answer: So many factors really matter. For instance if you live in a cold place and deal with stop and go, you will most likely have more carbon build up. Also if you only do short trips. I would usually add one bottle ever 3000 miles or every oil change for my Rav4 at 5000 miles.
    Question: What's the difference between this and lm valve clean? ty
    Answer: Jectron is designed for fuel injection system cleaning, smoother idle, improved throttle response. Valve Clean is specifically engineered for removing harmful deposits on valves and in the combustion chamber. It will also have beneficial intake and injection system cleaning effects; but its primary duty is valve deposit reduction.
    Question: PUT IN IN 18 GALLONS, 1/2 tank, or 1/4 tank
    Answer: https://products.liqui-moly.us/pro-line-gasoline-system-cleaner-2.html States minimum 7 gallons to maximum 18 gallons

    Product features

    LIQUI MOLY

    With around 4,000 items, LIQUI MOLY offers a global, uniquely broad range of automotive chemicals: Motor oils and additives, greases and pastes, sprays and car care, glues and sealants. Founded in 1957, LIQUI MOLY develops and produces exclusively in Germany. There it is the undisputed market leader for additives and is repeatedly voted the best oil brand.

    Made in Germany

    As a hotbed of ideas with Swabian roots and a conscientious global player, we only research, develop and manufacture in Germany, even today. And we have been raising the bar in terms of quality and service for 60 years. Our solutions are largely based on our own recipes, which we permanently test and adapt to the latest technical circumstances. Continuous quality inspections – from raw material deliveries, to production, right through to shipment – ensure maximum peace of mind.

    Full Range

    One brand – all solutions! We are one of the few full range brands in the world and offer more than 4,000 products from our one-stop shop! We offer the world's widest, deepest range of motor and gearbox oils, fuel and oil additives, care products, chemical problem-solvers and service products. In premium quality – always and everywhere.

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