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Best Fuel Stabilizer – A Detailed Look at Top Products in 2020

Storing fuel is necessary for a variety of reasons. Perhaps you’re tired of draining your seasonal vehicle of it every year? Or, maybe you like to keep a canister of fuel around for emergencies?

If you want to make sure your fuel is still viable for use, a stabilizer can help. However, the best fuel stabilizer to meet your needs depends on a few different factors, and it’s important to understand what these products can and can’t do before buying and using.

2 old fashioned jerry cans on a garage floor

In this article, you’re going to learn all about fuel stabilizers and how they work. You’ll discover what to consider when buying one, so you’ll be confident in getting the right one for you.

To finish this guide, we’ve also listed the top diesel and gasoline fuel stabilizers available on the market today.

Quick Links to Our Top Recommendations for Best Fuel Stabilizer

Note: Clicking the above links will take you to further information, current prices and customer reviews on Amazon.

What is a Fuel Stabilizer? How Does it Work?

They are products that preserve stored fuel. Regardless of the type, if it isn’t being used, it won’t last indefinitely. Over time, the chemical structure will change. This applies to all fuels derived from fossil fuel, including diesel, gasoline, kerosene, etc.

Once the composition of fuel is altered, it won’t have the same properties. In a practical sense, once such aged fuel is in your car, your engine won’t run the same way. In fact, it may not work at all.

The fuel in this altered state can also cause damage to the internal workings of the engine. Old gasoline can form solid gum-like deposits. The same is true of diesels. These can clog up the internal workings of the entire engine.

At this point, you may be wondering how fuel can go bad? After all, crude oil has lasted for millions of years.

The answer is that crude oil goes through a refining process to produce petroleum products that we used today. These range from waxes (such as petroleum jelly) to heating oil and of course, engine fuel. The final products bear little resemblance to the original fossil fuel.

Most of the gasoline sold in the United States is mixed with ethanol. The ethanol works to lower the toxic emissions produced by gasoline-run engines.

Ethanol can separate from gasoline if left unused for long enough. This is known as phase separation. When gasoline is exposed to water, the separation speeds up.

This alcohol may be useful when mixed with gasoline, but can be corrosive by itself. Ethanol also causes gasoline to evaporate faster, especially under warmer conditions.

Diesel and biodiesel—non-petroleum based diesel fuel can also degrade with time. The same applies to mixtures of the two, diesel and biodiesel.

Fuel stabilizers are made from substances that prevent or slow these chemical changes. Some brands claim to be capable of restoring old fuel as well as preventing new degradation.

A common ingredient is hydrotreated light napthenic distillate. It also goes under the names of mineral oil or petroleum distillate, although these terms are broad. Gasoline, for example, is also a petroleum distillate, as are most petroleum products.

Methanol is another conventional fuel stabilizer. It promotes smoother burning and cleaner combustion.

Another benefit is that methanol reduces the risk of corrosion. When mixed with other alcohols, it can combat phase separation in ethanol-based gasoline.

Fuel stabilizers can also contain detergents or conditioning agents. The detergents work to break down gummed up fuel to prevent blockages. Conditioning agents can be things like lubricants, which improve engine function.

Certain brands of stabilizer are made with secret ingredients. In these cases, only the manufacturer knows the exact formula.

How Long is Too Long to Store Fuel?

There is no simple answer to the question of a fuel’s shelf life. Environmental factors can hasten it’s expiration date. This can include exposure to oxygen, heat, and humidity.

Fuel stored in appropriate storage containers will keep for longer. When it’s in a tank (like in your vehicle) it is exposed to the elements, specifically air.

For gasoline, it’s recommended to use it within a month of purchase. If you store it in an airtight can, you can extend the shelf life to six months.

Note that the storage container should have space for the gasoline to expand. It should also be smaller than five gallons.

For diesel, the lifespan in storage is 12 months, if the temperature is below 68 degrees Fahrenheit. At 86 degrees Fahrenheit or higher, you can expect diesel to stay viable for six to 12 months.

Remember this only applies to fuel storage containers, not the tank in your vehicle or equipment. Exposure to metals of all sorts will speed up diesel deterioration.

This is an important point to reiterate. Forgetting about fuel that’s been stored too long in your vehicle can do irreparable damage to your engine and equipment. If you try to run the motor, you’ll be distributing buildup gunk throughout the engine system.

Also, if you do have old gas that needs throwing away, make sure you dispose of old gas properly and responsibly!

Can a Stabilizer Reverse Bad Fuel?

Some stabilizers on the market are capable of reversing changes in fuel that has been stored for years. The exact ingredients of these types of miracle stabilizers are trademark secrets, though.

The worse off the fuel’s condition, the less likely it is that a stabilizer will help. It’s preferable to avoid fuel from aging to that point in the first place.

Bear in mind that running rancid fuel can cause blockages or destroy your engine. You don’t want to make forgetting about stored fuel a habit.

How to Choose the Best Fuel Stabilizer – Buying Guide

There are a few things to consider before you pick a fuel stabilizer, as it’s important you choose the right product for the fuel you want to treat.

Gasoline, Diesel, or Oil Stabilizer?

Gasoline and diesel are distinct from one another. Diesel is denser than gasoline and has a higher boiling point. Gasoline is flammable, whereas diesel is combustible.

Similarly, diesel and gasoline engines run in different ways. You can’t use gasoline in a diesel engine, and vice versa. For these reasons, the oil we use to lubricate our engines is typically fuel-specific.

Your chosen stabilizer also has to be compatible with what you will be using it on. If you want to stabilize both diesel and gasoline, you can opt forone that works with both.

Using an incompatible stabilizer isn’t wise. At best, the wrong fuel additive won’t be effective. At worst, you might end up with engine damage or an unpleasant chemical reaction. Knowing which to buy will save you hassle as well as money.

Ease of Use and Mixing Instructions

Most brands of fuel stabilizer are straightforward to use. You won’t need to be proficient in mechanics or engineering.

All you have to do is pour the correct amount of stabilizer into the tank. This could be before or after you fill the tank, depending on the brand.

The instructions will tell you the right quantity for the amount of fuel you’re treating. You might have to let the product settle before you run the engine.

Having said that, some stabilizers are still easier to use than others. The containers may include spouts that make the stabilizer easier to measure out.

You’ll want to be sure to carefully read the intended use before purchase. For instance, not all fuel stabilizers are meant for refreshing old fuel. These variations should be used exclusively on fresh gasoline.

Any Compatibility Issues

Compatibility doesn’t only apply to the type of fuel you want to stabilize. Look at the product guidelines to see what sort of engines the stabilizer is rated for.

A few brands only work on either two-cycle or four-cycle engines. Others are developed for specific vehicles or equipment. For example, some are primarily intended for use in boats.

Reviews and Customer Satisfaction

Reviews can guide you in the right direction when you’re buying a fuel stabilizer. You can find out if a particular brand will meet your expectations based on the experiences of others. Search out reviews written by real people, like on Amazon.

The manufacturer’s website or product pamphlets can sometimes be biased. It’s always helpful to learn about the results that others have had with a particular product.


The prices can vary dramatically. The ingredients, manufacturer, and concentration all play a role in the cost.

The quantity is often less important than concentration. A big bottle might treat less fuel than a small bottle if the smaller one has a highly concentrated formula. Compare costs based on how much fuel can be treated, not the actual size of the product.

Stabilizers from well-known companies are likely to be priced higher. At the same time, you’re usually getting a better quality guarantee than from a lesser known brand.

Best Fuel Stabilizers for Gasoline

Below, we’ve rounded up and added mini reviews of the best fuel stabilizers for gasoline for your convenience. There’s a stabilizer listed suitable for every type gasoline engine—so take a look to find the right one for you.

Briggs & Stratton Advanced Formula Fuel Treatment and Stabilizer

Briggs & Stratton 100119 Fuel Treatment Replaces 100119WEB, 100115, 100119A

This versatile product can be used to treat any gasoline engine. Whether you want to use it on your chainsaw or your small boat, it’ll do the job. This treatment is suitable for two-cycle and four-cycle engines alike.

The concentrated formula means that one bottle is sufficient for engines small and large. A 16-ounce bottle is capable of treating 80 gallons of fuel.

You won’t have to worry about following up with applications for a long time. If the equipment you’re applying this product to is only being used occasionally, this is a practical product to choose.

As long as the gasoline you’re treating is fresh, you can expect it to last up to three years. The quality of the gasoline remains consistent, whether you turn on the motor months or years after adding the stabilizer.

This Briggs & Stratton treatment and stabilizer does more than just stabilize gasoline. It contains detergents to reduce the risk of buildup inside your engine.

The formula also includes antioxidants against ethanol for extra protection. In turn, this prevents corrosion and other chemical reactions from taking place.

All of these positive effects can improve engine function overall. You’ll find that difficulties starting up stored equipment will be a thing of the past.

This is useful for those of you who want to stabilize fuel in winter equipment. Engines tend to be more prone to rougher starts when the temperature drops. With all the conditioning agents in this stabilizer, your engines should start up smoothly.

Features and Specifications

  • Bottle capacity: 16 ounces.
  • Compatible with all two and four-cycle gasoline engines.
  • One bottle can treat up to 80 gallons.
  • Stabilizes for up to three years.

What We Like

  • A little goes a long way.
  • Suits all sorts of engines from boat motors to lawnmowers.
  • Long-lasting stabilizer.
  • Includes detergent and antioxidants.

What We Don’t Like

  • Only treats fresh gas.
  • Plastic container has been known to leak.


If you want a fuel stabilizer that’ll do the trick for all your seasonal equipment or vehicles, this Briggs & Stratton product will work for you.

Check out this fuel stabilizer for yourself at the link below:


Click to Learn More / Buy from Amazon


PRI Fuel Stabilizer [16 Oz.] [Fuel Economy Booster]

PRI Fuel Stabilizer - Gasoline, 16 Ounce- Fuel Economy Booster

This product functions as both a stabilizer and rejuvenator. Despite the small container, one bottle can treat up to 256 gallons of gasoline. This is because it’s highly concentrated, which makes it one of the most cost-effective gasoline stabilizers out there. If you’re using it sporadically, one bottle can last you years.

Measuring out the quantity you’ll need is easy. The spout of the bottle comes with a gauge.

There are almost no limits when it comes to this stabilizer. You can use it with any gasoline engine to preserve your fuel. This applies to small as well as large engines. Treating fresh gas will keep it stable for up to one year.

Or, you can rejuvenate gasoline that has been left unused for years. If you’re thinking about draining fuel from a long-neglected engine, try PRI’s stabilizer first. It works on gasoline that has been stored for long periods of time.

PRI fuel stabilizer can have other applications too. If you’re suffering with an engine that starts roughly, this stabilizer could help.

It contains conditioning compounds to help your engine run smoothly. If you’re tired of a hard-to-start engine, this product is ideal. Try treating an older truck or car with this product, rather than a traditional fuel booster.

Features and Specifications

  • Bottle capacity: 16 ounces.
  • One bottle treats up to 256 gallons.
  • Enhanced thermal stability chemistry increases engine power and performance.
  • Restores degraded fuels and extends storage life.
  • Prevents damaging deposits.
  • Contains no alcohol.
  • Compatible with any gasoline engine.

What We Like

  • Highly concentrated.
  • Built-in measuring gauge.
  • Capable of restoring old fuel.
  • Compatible with any engine.
  • Helps alleviate rough starting and idling.

What We Don’t Like

  • Seems to be ineffective on dirty equipment.


The PRI-G stabilizer is ideal for users looking to refresh old gasoline or keep stored gasoline in prime condition. It also improves engine performance. If you’re not interested in buying and using a stabilizer repeatedly, this heavily concentrated product will also appeal to you.

Click the link below to see it for yourself:


Click to Learn More / Buy from Amazon


Royal Purple Max-Clean Fuel System Cleaner And Stabilizer

Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722

As the name suggests, this product does more than stabilize fuel. It’s designed to improve the performance of both diesel and gasoline engines.

A great feature of this stabilizer is that nearly anyone can use it. Whether your engine is large or small, gasoline or diesel, this Purple Max product is suitable.

This product contains agents to keep your engine and fuel system clean. By breaking down build-ups and preventing them from reforming, it can lower toxic emissions.

Those of you with older vehicles can take advantage of this liquid. Using it regularly (every 10,000 miles) will combat typical issues of many older cars, trucks or appliances. This includes rough idling and start-up, engine pinging and engine knocking.

The cleaner things are, the better your engine will behave. You’ll find you get better miles to the gallon than with a dirty fuel system. You’ll also see increased horsepower.

On newer vehicle engines, Purple Max’s stabilizer can be used as a preventative measure. You can keep your engine and fuel system like new in terms of cleanliness.

You’ll also have a guarantee against expired fuel in off-season vehicles or equipment.

The Purple Max stabilizer and cleaner will go a long way treating smaller engines. You’ll only need to add a single ounce to treat one gallon of fuel.

Features and Specifications

  • Bottle capacity: 20 ounces.
  • Compatible with all two and four-cycle gasoline and diesel engines.
  • One bottle treats 20 gallons.
  • Stabilizes fuel during seasonal storage.
  • Removes buildup and deposits.
  • Maximizes horsepower and restores fuel economy.

What We Like

  • Suitable for almost any engine.
  • Cleans out buildup and reduces emissions.
  • Prevent corrosion.
  • Improves engine performance and fuel consumption.
  • Reduces issues common in older vehicle engines.

What We Don’t Like

  • Can gunk up smaller engines (g. lawnmowers).
  • As a stabilizer, it should only be used with fresh fuel.


Vehicle owners looking to give new life to older engines will appreciate this product. If you want more than just a stabilizer, this product will appeal to you, although you’ll probably need to use the whole bottle at once.

Take a look at it for yourself at this link:


Click to Learn More / Buy from Amazon


Yamaha Acc-Fstab-Pl-32 Fuel Stabilizer & Conditioner

Yamaha ACC-FSTAB-PL-32 Fuel Stabilizer & Conditioner

This fuel stabilizer and conditioner by Yamaha is made for E10 gasoline engines. If you have a new Yamaha engine, you might prefer this brand-specific stabilizer. Using a Yamaha stabilizer and conditioner will keep you from voiding your warranty.

If you’re not sure what an E10 engine is, this doesn’t mean you don’t have one. In fact, you probably do. E10 engines are any engine that runs off 90 percent gasoline and 10 percent ethanol. Many engines in the United States run off an E10 blend as it’s the most common type of motor gasoline.

Unlike many other stabilizers, Yamaha’s formula is free of alcohol. It’s suitable for all metals, including aluminum. You won’t have to worry about corroding or otherwise damaging your E10 engine.

This stabilizer is designed to prevent chemical changes from taking place in aging gasoline. This means phase separation, gum, and varnish. You can expect your fuel to remain stable for up to one year after treatment.

You’re unlikely to deal with rough starts or choppy idling with this product, even after extended storage. Engines treated with it should start up smoothly and evenly.

Features and Specifications

  • Bottle capacity: 32 ounces.
  • Alcohol-free formula.
  • Specifically made for E10 gasoline engines.
  • Helps protect metals from corrosion and rust.
  • Compatible with all gasoline engines.
  • Helps reduce phase separation problems.
  • One bottle treats 96 gallons.

What We Like

  • Reputable manufacturer (Yamaha).
  • Suitable for all engines that run off E10.
  • Anti-corrosion.
  • Stabilizes fuel for a long time.
  • Dual purpose conditioner and stabilizer.

What We Don’t Like

  • Can only treat fresh gasoline.


Yamaha engine-owners can purchase this product to keep their investment under warranty. That being said, any E10 engine owner–no matter the vehicle make—will appreciate the Yamaha fuel stabilizer and conditioner.

Click the following link to learn more:


Click to Learn More / Buy from Amazon


STA-BIL 360° Performance With Vapor Technology, Treatment and Fuel Stabilizer for Gasoline

STA-BIL (22275) 360 Protection - Ethanol Treatment And Fuel Stabilizer - Prevents Corrosion - Prevents Ethanol Damage - Cleans The Fuel System - Treats Up To 160 Gallons, 32 fl. oz.

This stabilizer by STA-BIL is great for preserving fuel in seasonal-use engines. One ounce will treat up to five gallons of gas.

It offers comprehensive protection for fuel systems and engines. The alcohol-free formula vaporizes to rise above the fuel line. Whether you’re using an ethanol blend of gasoline or something else, this stabilizer is compatible.

The vapor can reach all the way to your combustion chamber and other internal workings in your engine. The rising film will coat all metal and rubber parts for extra protection.

The alcohol-free formula can break down as well as prevent buildup from oxidizing gasoline. It’s also capable of stripping away carbon build-up, to boost your engine’s power.

Best of all, your engine doesn’t have to be running for this process to take place. To reap these benefits, you only have to treat fresh gasoline with the appropriate dosage.

If you like, you can use this product for vehicle maintenance. By keeping your engine and fuel system clean, you’ll most likely get better mileage.

Adding it to fresh gasoline will keep it stable for up to 12 months. This is more than enough time for standard off-season equipment and vehicles. If you’re treating smaller engines, one bottle will serve you for a long time.

Features and Specifications

  • Bottle capacity: 32 ounces (other sizes available).
  • Compatible with all gasoline engines.
  • Alcohol-free formula.
  • One 32-ounce bottle treats up to 160 gallons.
  • Stabilizes fuel for up to 12 months.

What We Like

  • Long-lasting quantity if used for smaller engines.
  • Improves small engine performance.
  • Can promote better mileage in vehicles.
  • Protects above the fuel line.
  • Smooths out rough engines.

What We Don’t Like

  • Blockages can occur in unclean engines.
  • Several users report no difference to their vehicles.


If you want to keep both large and small engines running like new, as well as stabilizing your stored gas for up to 12 months, this STA-BIL product is a good choice.

If you want to learn more about it, follow the link below:


Click to Learn More / Buy from Amazon


STA-BIL 22207 Gasoline Stabilizer – 16 Oz.

STA-BIL 22207 Fuel Stabilizer - 16 oz., Red

If you hate preparing your small-engine equipment for storage, try this fuel stabilizer by STA-BIL. The 16-ounce bottle can treat up to 20 gallons of gasoline.

This product works with any gasoline-run engine. It includes ingredients to discourage phase separation and corrosion in ethanol blends too. Run your engine for five minutes after application to make sure the product spreads everywhere it’s supposed to.

This is all you’ll need for equipment like snow-blowers, lawnmowers, and similar items. It’s also enough for small containers of stored gasoline you might need for generators or an emergency vehicle refill.

The manufacturer claims your gasoline will stay stable for up to two years after application. If you’re the type that tends to be forgetful, this stabilizer may come to the rescue.

Features and Specifications

  • Bottle capacity: 16 ounces (also available in other sizes).
  • Compatible with all gasoline engines.
  • One 16-ounce bottle treats up to 40 gallons.
  • Stabilizes fuel for up to 24 months.
  • Quick, easy starts after storage.
  • Easy-pour, quick measure bottle

What We Like

  • Perfect quantity for smaller engines.
  • Ensures rapid engine start after storage.
  • Users have reported stabilized fuel for years after application.
  • Prevents corrosion.
  • Measuring capability of the bottle.

What We Don’t Like

  • Only works on fresh fuel.
  • Tanks must be kept filled to 95 percent capacity with fresh fuel during storage.


If you don’t want your stabilizer to go to waste, this compact bottle is the solution. The 16-ounce capacity treats up to 40 gallons of fuel, just the thing if you don’t have much to stabilize.

If you’re curious to know more, follow this link:


Click to Learn More / Buy from Amazon


Star Tron Enzyme Fuel Treatment Concentrate

Star Tron Enzyme Fuel Treatment - Concentrated Gas Formula 16 oz - Treats 256 Gallons

This concentrated product can be used for a range of applications. To start with, you can treat over 250 gallons of gasoline with a single 16-ounce bottle.

The stabilizer needs to be added before fill-up, and initial treatment needs 1 ounce for every 8 gallons. Subsequent refills only require half that amount.

Measuring this stabilizer out is easy, thanks to 1-ounce markings on the bottle. In the event that you accidentally pour too much in, there’s no need to panic. The ingredients are engine-friendly, and the excess product won’t cause damage or blockages.

Fresh gasoline treated with Star Tron’s stabilizer will last you for two full years. Fuel doesn’t start to deteriorate until closer to the two-year mark. Your engine will start up smoothly even if you choose to keep it stored for that long.

Aside from that, this stabilizer can refresh old engines. The formula includes enzymes to break down deposits and dirt in your fuel system and engine. These enzymes also assist with water dispersal. Excess water is one of the main causes of phase separation in gasoline.

You can use it as a maintenance product for engines of any size. Stable fuel and clean inner workings make for improved performance. You’ll also notice fewer toxic emissions.

If you’ve let your gasoline sit for too long, this treatment might work. It can rejuvenate stored fuel that’s been neglected for months or, in some cases, years.

Features and Specifications

  • Bottle capacity: 16 ounces (also available various other sizes).
  • Compatible with all gasoline engines.
  • One 16-ounce bottle treats up to 256 gallons.
  • Stabilizes fuel for two years.
  • Helps to rejuvenate stale fuel and prevents phase separation.
  • Removes gum, varnish and carbon.

What We Like

  • Going overboard with dosage won’t harm your engine.
  • Cleans out existing buildup and gunk.
  • Protects against corrosion.
  • Enhances combustion.
  • Easy to measure out.
  • Refreshes years-old gasoline.

What We Don’t Like

  • Should be used at every fill-up for optimum efficiency.
  • Not as concentrated as some other products.


Star Tron enzyme fuel concentrate is great for rejuvenating old gasoline and clearing out neglected engines. It will give you peace of mind when storing gas for up to two years. Works on boats, motorcycles, mowers and so many other gas-powered engines.

If you’re eager to get more details, follow the link below:


Click to Learn More / Buy from Amazon


Best Fuel Stabilizers for Diesel

For the readers out there with equipment that requires diesel to run, we’ve got you covered. Here are two of the top diesel fuel stabilizers on the market.

Sta-Bil 22255 Diesel Formula Fuel Stabilizer and Performance Improver – 128 Fl. Oz.

STA-BIL (22255) Diesel Fuel Stabilizer And Performance Improver - Keeps Diesel Fuel Fresh For Up To 12 Months - Lubricates And Cleans The Fuel System - Treats 1,280 Gallons, 1 Gallon, 128 Fl. oz.

If you want to take precautions against engine trouble, this stabilizer will do the job. Treated fuel will remain stable for up to two years. This stabilizer is compatible with any type of diesel, including biodiesel.

Stabilizing fuel isn’t the only thing this product does. The formula lowers water content in diesel to discourage the growth of algae and microbes.

This benefit will be noticeable in engines prone to water trouble. The STA-BIL treatment will eliminate “watery” startups in stored engines, from RVs to tractors.

It also has conditioning agents to maximize your engine’s performance. These ingredients will keep your fuel injectors clean and lubricated.

In addition, they’ll break down built-up sediment or sludge. If you’re using it on a new piece of equipment, it stops these compounds from forming in the first place.

You can add this to your tank every time you fill it up—one ounce treats 10 gallons. For stored vehicles and equipment, use one ounce to every five gallons of fuel.

Features and Specifications

  • Bottle capacity: 1 gallon (also available in a 32-ounce size).
  • Compatible with all diesel and biodiesel engines.
  • The 1-gallon bottle treats up to 1280 gallons.
  • Stabilizes fuel for up to two years.
  • Cleans and lubricates fuel system.
  • Prevents corrosion and helps remove water.

What We Like

  • Great for engine maintenance.
  • If used regularly, boosts engine performance.
  • Improves mileage in vehicles.
  • Long-lasting.
  • Cleans out dirty fuel systems and engines.
  • Protects against bacteria and algae growth.

What We Don’t Like

  • Difficult to pour and measure out.
  • Can’t restore old fuel.
  • Manufacturer warns not to overtreat.


This diesel stabilizer can be used for stored fuel or regular maintenance. Either way, you can expect improved engine performance in your diesel engine.

If you want to buy a bottle of your own or find out more information, check it out at this link:


Click to Learn More / Buy from Amazon


Star Tron Enzyme Fuel Treatment – Super Concentrated Diesel Formula

Star Tron Enzyme Fuel Treatment - Super Concentrated Diesel Formula 8 oz - Treats 256 Gallons

This super-concentrated stabilizer is ideal for treating diesel of all types. You can even use it to treat heating oil safely.

The formula works to break down water (which can cause issues like sediment buildup and microbes). At the same time, it won’t cause problems if you go overboard with treatment. It’s guaranteed to be safe on your engine and fuel system.

A bonus is that you don’t have to clean out your engines to use it. Existing sludge, soot, or other debris get broken down.

In vehicles, using this product will get you better fuel economy. You’ll see fewer noxious emissions (e.g. exhaust smoke) too.

Your fuel isn’t the only thing you’ll be saving in the long-run. After the initial treatment, one ounce can treat 32 gallons of diesel, so it’s light on the pocket too.

Users have reported using this fuel stabilizer in gasoline engines with success. Note that Star Tron does manufacture a different (but similar) stabilizer specifically for gasoline.

Features and Specifications

  • Bottle capacity: 8 ounces (also available other sizes, up to 1 gallon).
  • Compatible with all diesel engines.
  • Stabilizes fuel for two years.
  • Helps remove water.
  • Reduces soot.
  • Improves fuel economy and throttle response.
  • Initial treatment: one ounce treats 16 gallons.
  • Maintenance treatment: one ounce treats 32 gallons.

What We Like

  • Suitable for treating heating oil.
  • Can be used in gasoline engines (at lower doses).
  • Engine-safe.
  • Keeps engines clean and deposit-free.
  • Regular treatments help economize fuel.
  • Lowers emissions.
  • Overdosing won’t do any harm.

What We Don’t Like

  • Needs to be used each time the tank is filled for best results.


This multi-purpose stabilizer can be used on all diesel vehicles and make an appreciable difference in how your engine handles. It can also keep your stored diesel fuel stable for up to two years.

If you want to know more, follow this link:


Click to Learn More / Buy from Amazon



By now, you should be an expert on all things related to fuel stabilizers. You also know how to select the best fuel stabilizer for you and your vehicle or equipment.

Out of all the products in our roundup, for us there is a clear winner. That is the Briggs & Stratton advanced formula fuel treatment and stabilizer. It stabilizes fresh gasoline for up to three years and is compatible with any gasoline engine.

If you have any feedback, comments, or questions, share your thoughts in the comment section below. We look forward to reading and responding to every one!


Product image credits: © Amazon.com

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From childhood go karting and motocross, to collecting and obsessing over scalextric, matchbox and radio controlled cars, I've always had an obsession with cars. Learning through manuals, books, trial and error, and more knowledgeable family members, I've also enjoyed tinkering with the mechanics and electronics of any vehicles I've owned. Now, over 3 decades later, I've started this site as a place for me to share my knowledge, to teach others how to care for and maintain their vehicles themselves, at home, so they can get the most of their vehicles and save a pretty penny compared to always seeking out professional help.

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