During winter when you park your car or boat for several months before using them again, you unknowingly increase the chances of your engine being destroyed. This is precisely why fuel stabilizers exist. This article will help you decide on the best stabilizer in the market so that the fuel in your engine does not cause damage when it evaporates and oxidizes in your fuel tank.

Product FAQ

Before we compare the different stabilizers available on the market, we have prepared some frequently asked questions and their answers so you can have a better understanding of what a fuel stabilizer is and what it does.  We will also answer important questions about where to buy them and their importance.

1. What Is a Fuel Stabilizer?

A fuel stabilizer is a special kind of liquid that keeps your tank fresh so that your engine easily starts.

2. What Does It Do?

Stabilizers ensure that your fuel is clean and they protect your engine from destructive substances that may form. This way, the efficiency of your engine is maintained and the fuel in it burns as it should.

3. How Does It Work?

Fuel stabilizers work by stopping the oxidation process in your engine. It is prudent to note that the oxidation process will not stop until a stabilizer is used. Once it is added to your fuel tank, you are required to turn the engine on so it is distributed evenly in your engine. A fuel stabilizer has two main functions: to act as an antioxidant and to absorb water in the tank.

4. Where Can You Buy It?

All the fuel stabilizers on our list can be bought from Amazon.

5. Benefits of a Fuel Stabilizer?

There are several benefits that one can get from using a fuel stabilizer. Apart from the main benefit, which is preventing oxidation, stabilizers also increase the efficiency of your engine. One important benefit is seen from the fact that some brands may improve your fuel economy by over 5%, and it results in your engine starting faster. Depending on the brand used, you can store fuel for around 3 years using a stabilizer, and you do not have to drain the fuel to store it. Using a fuel stabilizer subjects you to other unexpected advantages, such as cleaning your carburetor and fuel injectors.

How We Reviewed

The products on our top 10 stabilizer list were reviewed based on parameters such as their features, pros, cons and where to buy them. We know that the market has many fuel stabilizers that all claim to be effective. This is why we invested our time and effort to give you this unbiased best-of list. The products on our top 10 best-of list were also evaluated based on their efficiency in the market, and popularity. We are therefore satisfied that they have met our required standards.

What We Reviewed

  • Sentry New Technology Fuel Treatment
  • PRI Boat Fuel Stabilizer
  • ValvTect Ethanol Gasoline Treatment
  • BioborEB Ethanol Buster
  • Star Tron Enzyme Fuel Treatment
  • QuickSilver Quickstor
  • Briggs & Stratton Fuel Treatment
  • STA-BIL 360 Marine Fuel Stabilizer
  • Yamalube Fuel Stabilizer and Conditioner Plus
  • STA-BIL 22214 Fuel Stabilizer

1. Sentry New Technology Fuel Treatment

Sentry New Technology Fuel Treatment (Gas Plus Marine/SD Formula)...
  • Gasoline Fuel Treatment, Eliminates Water in Fuel, Inhibits Ethanol Phase Separation
  • All Grades and 2 Stroke Compatible, Increases Lubrication,
  • Eliminates Fuel/Water Problems, Boost Power and Reduces Smoke,Stabilizes and Restores Fuel

Features

Sentry makes it to the list of our top ten best stabilizers because of its reputable name where marine equipment is concerned. It incorporates an SD formula that works by stabilizing the fuel in your engine while at the same time eliminating water that decreases its efficiency. A 32-ounce bottle can treat around 80 gallons of fuel. Other features include a capacity to not only clean the engine but also the fuel injectors, and it inhibits ethanol phase separation. The product boosts the power of your engine and reduces smoke problems associated with it.

PROS

  • Works as advertised
  • Best for marine equipment

CONS

  • Relatively expensive
  • Some products may be defective

2. PRI Boat Fuel Stabilizer

Features

This boat fuel stabilizer is able to treat 512 gallons of fuel with only 32 ounces. It is manufactured in such a way that it can treat both 2- and 4-stroke engines. Compared to Sentry, this fuel stabilizer is cheaper per gallon. Unlike other stabilizers in the market, this one boasts contains no alcohol in its formulation. Though this makes it less efficient when compared to other stabilizers, it does not dissolve salt, and this reduces any problems that may arise in your system. If you are searching for the best alcohol-free fuel stabilizer, then this is it.

PROS

  • Works as advertised
  • Suitable for storing fuel for long periods

CONS

  • Some products may be defective
  • Contains no alcohol so not efficient

3. ValvTect Ethanol Gasoline Treatment

Features

ValvTect is a stabilizer that is specially formulated for marine engines. The product is packaged in a unique bottle design that has two bottle tops instead of one. Its special formulation enables it to stabilize fuel for around 12 months while preventing corrosion in the engine. Its efficiency is seen from the fact that this fuel stabilizer works by dispersing moisture and preventing phase separation and octane loss in the engine.

PROS

  • Works for around 1 year
  • Works as advertised

CONS

  • Some products may be defective
  • Poor branding

4. BioborEB Ethanol Buster

Sale
Biobor EB, Ethanol Buster and Performance Enhancer Gasoline Treatment,...
  • Prevents fuel phase separation and ethanol related issues
  • Removes performance robbing deposits and varnish
  • Stabilizes stored gasoline for up to 18 months

Features

This stabilizer has an impressive packaging design that has two bottle tops instead of one. It has a long rate of use as it can stabilize stored gasoline for over a year and a half. Another feature includes its ability to remove deposits that may reduce the performance of your engine and inhibit corrosion. One unique feature of this stabilizer is that it adds lubricity to your system, and this creates an overall effect of reducing the wear and tear of fuel system compartments.

PROS

  • A multipurpose fuel stabilizer
  • Product works as advertised
  • Improves the sound of your engine
  • Stabilizes gasoline for more than a year

CONS

  • The product does not come with a user manual
  • Some products may be defective

5. Star Tron Enzyme Fuel Treatment

Sale
Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 oz - Treats...
  • 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

Features

One unique feature of this stabilizer is that is that it can be used for all gasoline engines. Unlike other fuel stabilizers that work for less than a year, this stabilizer will work for two years. Another feature of this stabilizer is that it not only cleans the injectors, but it also cleans up the valves. Using this stabilizer will cause an increase of your engine’s efficiency and reduce gas emissions. If you are looking for a fuel stabilizer that will solve your ethanol problem, then this is what you should look for.

PROS

  • Treats fuel for two years
  • Solves your ethanol problems

CONS

  • Relatively expensive
  • Some products may be defective

6. QuickSilver Quickstor

Quicksilver 8M0047922 Quickstor Fuel Stabilizer, 12 Oz - for All...
  • Add to fuel before long-term boat storage
  • Prevents regular and ethanol blended fuel from breaking down and oxidizing.
  • Stabilizes fuel for up to two years. One ounce treats five gallons.

Features

Unlike the packaging design used by other fuel stabilizers, this one comes with an impressive bottle design that is classic and easy to carry. This stabilizer keeps fuel good for up to one year. Other features include a capability to not only lubricate but to maintain carburetors and injectors. It is suitable for 2 and 4 carburetted gasoline engines that are fuel injected.

PROS

  • Prevents corrosion in the engine
  • Suitable for 2 and 4 carburetors
  • Adds value for money

CONS

  • Stabilizes fuel for only a year
  • Some products may be defective

7. Briggs & Stratton Fuel Treatment

Briggs & Stratton 100118 8 oz. Fuel Treatment Replaces 100118, 100114,...
  • Genuine Briggs & Stratton part Number 100118
  • 8 flu oz, treats up to 40 gallons of gas
  • Triple antioxidant protection

Features

Briggs and Stratton is an affordable stabilizer when compared to the Sentry stabilizer. However, it has one shortcoming, and that is the fact that only 80 gallons of fuel can be treated with this stabilizer per 16 ounces. It is specifically made with small boat owners in mind who have small engine capacities. One great thing about this stabilizer is that it solves your ethanol problem due to its triple anti-oxidant property. It also does this because it has corrosion inhibitors in its formulation. It has impressive stabilizing properties and can stabilize fuel for over three years.

PROS

  • Stabilizes fuel for three years
  • Has triple antioxidant properties
  • Affordable

CONS

  • Only treats 80 gallons of fuel per 16 ounces
  • Some products may be defective

8. STA-BIL 360 Marine Fuel Stabilizer

Features

The Sta-Bil 360 Marine Fuel Stabilizer comes in an impressive packaging design with two bottlenecks on it. It is a 5-in-1 formula as it can perform several functions such as cleaning the fuel system, preventing ethanol damage, maximizing the fuel economy by removing water, and increasing engine power. Unlike other stabilizers, this stabilizer is designed for boat owners to service their engines. It prevents corrosion in the engine system thanks to the vapor technology used to make this stabilizer. 5 gallons of fuel can be treated with only 1 ounce of Sta-Bill.

PROS

  • 5-in-1 product
  • Impressive packaging design
  • Works as advertised

CONS

  • Some products may be defective
  • Stabilizes fuel for only one year

9. Yamalube Fuel Stabilizer and Conditioner Plus

Features

The Yamalube Fuel Stabilizer and Conditioner Plus comes in a black plastic bottle that is attractive with a sleek design. The main feature of this fuel stabilizer is that it acts as both a stabilizer and a conditioner. It is an alcohol-free stabilizer which prevents oxidation, especially when moisture is absorbed from the air by ethanol. The main feature of this stabilizer is that it keeps your engine fresh and free from varnish and gum for around 12 months. It has metal filmers effective in protecting your engine from rust and corrosion. This stabilizer is made for 2- and 4-stroke engines.

PROS

  • Contains metal filmers
  • Suitable for 2- and 4-stroke engines

CONS

  • Protects fuel for only one year
  • Free of alcohol

10. STA-BIL 22214 Fuel Stabilizer

STA-BIL (22214) Storage Fuel Stabilizer - Guaranteed To Keep Fuel...
  • Keeps fuel fresh for up to 24 months during storage
  • Eliminates need to drain fuel prior to storage
  • Ensures quick, easy starts after storage

Features

This product comes with an impressive packaging with two bottle lids instead of one. The bottle is attractive with a sleek design. This fuel stabilizer is suitable for if you intend to keep your engine inactive for at least 12 months. It protects your engine from varnishes and gum. One unique feature of this stabilizer is that it treats many gasoline products.

Another feature of this product is that it not only cleans your carburetor but also your fuel injectors. It comes in different sizes such as single neck and twin neck bottle designs for convenient measurement. This product is only suitable for use on fresh fuel as fresh fuel is more stable. It is also suitable for use on most machines.

PROS

  • Works as advertised
  • Easy to use

CONS

  • Difficult to pour directly into a gas tank
  • Some products may be defective

The Verdict

All our top 10 fuel stabilizers are the best to buy. However, the best one for you is the stabilizer that solves your individual needs. If you are experiencing ethanol problems, then the Sta-Bil 360 Marine Stabilizer is best for you. Alternatively, if you want to store your fuel for over 12 months, then the Briggs & Stratton stabilizer is best as you can store fuel effectively for around 3 years.

Last update on 2021-04-10 at 10:17 / Affiliate links / Images from Amazon Product Advertising API

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