Best Fuel Stabilizers

Review & Comparison, Last Update February 5, 2020
Even when you purchase the most expensive fuel, you still need fuel stabilizers to make sure these fuels are doing their job as well as they can. The best fuel stabilizers will also let you maintain and optimize engine performance. ...Read more ...Read less
BEST 2020
PROS
CONS
OUR VERDICT
Type
Best For
Recommended Dosage
Volume
 
PROS

The product will be able to prevent sediment and sludge formations. You won't have to worry about bacteria, algae, and fungi growth. The additive works wonders protecting the engine from corrosion. 

CONS

The product is somewhat hard to pour. 

OUR VERDICT

DieselPower Sta-Bil 22254 will be protecting any and all diesel engines. The solution will also be able to optimize and increase most diesel fuels' productivity. You can use this additive with vehicles that you use regularly and with those that you don't.

detailed parameters
Type

Ready-to-use 

Best For

All diesel engines, all diesel fuels 

Recommended Dosage

Use at every fill-up

For everyday protection: 1 oz for every 10 gallons of diesel

For seasonal storage: 1 oz for every 5 gallons of diesel

Volume

32 fl. oz.,

32 fl. oz. pack of 4, 128 fl. oz. pack of 1, 128 fl. oz. pack of 4 are available

PROS

The agent will be removing gum, varnish, and carbon deposits, making sure the engine runs clean and strong. Also, the solution does an excellent job rejuvenating old, sub-spec fuels and curing and preventing most issues with ethanol fuels. 

CONS

The seal on the top of the bottle is not as tight as it should be. 

OUR VERDICT

Star Tron Enzyme Fuel Treatment Concentrate will be enhancing the engine's combustion and ensuring smooth performance. At the same time, the product will be able to improve fuel economy and reduce emissions. 

detailed parameters
Type

Concentrated 

Best For

All gasoline engines (including 2-cycle pre-mix) 

Recommended Dosage

Initial dosage: add 1 fl. oz. for every 8 gallons

Refill: add 1 fl. oz. (30 ml) for every 16 gallons 

Volume

16 fl. oz.,

8 fl. oz., 32 fl. oz., 128 fl. oz. are available 

PROS

Improving the engine's ability to remove water, this product prevents corrosion buildup. It will also be preventing and removing gum and varnish buildups. The solution cleans the entire fuel system to increase gas mileage. 

CONS

The product's shelf life is not that long. 

OUR VERDICT

There are not too many people with various watercraft vehicles that would not benefit from the STA-BIL 22240 agent. The product does an awesome job maintaining and optimizing most marine gasoline engines. 

detailed parameters
Type

Ready-to-use 

Best For

Marine gasoline engines 

Recommended Dosage

Use at every fill-up

For everyday protection: 1 oz per 10 gallons of fuel

For seasonal storage: 1 oz for every 5 gallons of diesel

Volume

32 fl. oz.,

8 fl. oz., 10 fl. oz., different packs are available

PROS

The solution will be able to ensure smooth, quick, and reliable starts. You won't have to worry about rust. The product will be working wonders cleansing injectors and carburetors.

CONS

The short spout makes measuring hard. 

OUR VERDICT

STA-BIL 22208 will help you store snowblowers, lawn mowers, motorcycles, boats, and various cars. You won't have to drain the fuel before storing these machines, just add the product and you can forget about them for 1-2 years. 

detailed parameters
Type

Ready-to-use 

Best For

All gasoline engines (including 2-cycle pre-mix) 

Recommended Dosage

For seasonal storage: 1 oz for every 2.5 gallons of fresh fuel

For longer storage periods (12 - 24 months): 2 oz for every 2.5 gallons of fresh fuel

Volume

8 fl. oz.,

4 fl. oz., 10 fl. oz., 16 fl. oz., 32 fl. oz., 128 fl. oz., different packs are available

PROS

The additive strips away gum, varnish, and carbon, preventing them from building up and inhibiting the engine's performance. You'll be maximizing fuel economy since the fuel will be getting burned completely. 

CONS

The cap is not very secure. 

OUR VERDICT

STA-BIL 22295 is what the titular company has formulated to prevent and reduce ethanol-blended fuels' negative effects. You can also use this product with non-ethanol blended fuels though. It will prove effective with both. 

detailed parameters
Type

Ready-to-use 

Best For

Gasoline engines, Ethanol-blended and non-ethanol blended fuels 

Recommended Dosage

Use at every fill-up

1 oz per 5 gallons of fuel

Volume

4 fl. oz.,

8 fl. oz., 10 fl. oz., 32 fl. oz., different packs are available

DieselPower Sta-Bil 22254

All Diesel Engines and Fuels

DieselPower Sta-Bil 22254 is relatively expensive but that's because this agent does more than most fuel stabilizers.

Sure, like most, this additive keeps the fuel fresh, enabling quick and easy starts and maximizing engine performance.

At the same time, this product works wonders preventing sludge and sediment formations, cleaning and lubricating the entire fuel system, including fuel injectors.

This way, the solution improves the engine's performance and removes the water that leads to algae, fungi, and bacteria growth.

Apart from that, this stabilizer protects the engine against corrosion, increasing its service life.

Last but not least, the product will be reducing the diesel fuel oxidation that's usually caused due to thermal breakdown.

The massive bottle is pretty comfortable to store and its 32-fluid-ounce volume means that the bottle will last. Because the bottle is so large though, the additive can be quite hard to pour but that's something that we're willing to overlook given everything else this product does.

Long story short, DieselPower Sta-Bil 22254 will be able to protect all diesel engines and optimize all diesel fuels. With this product, you'll be spending way less dough on car maintenance.

Review of DieselPower Sta-Bil 22254 Diesel Formula Fuel Stabilizer

Additional Info

User Manual     Manufacturer


 

Star Brite Enzyme Fuel Treatment

Smooth Operation

Star Tron Enzyme Fuel Treatment Concentrate is up there with the most complete concentrate solutions.

First things first, this product will be able to remove gum and carbon deposits to make sure the engine is running clean and strong.

At the same time, this additive will be able to cure and prevent most ethanol fuel problems. Dispersing water into these submicron-sized droplets, the additive will also be preventing phase separation.

Aside from carbon and gum deposits, this agent will be removing varnish from valves and injectors, increasing fuel efficiency and reducing emissions.

The product will have no issues with all gasoline engines, including 2-cycle pre-mix engines. Its formula is economical and will be able to cover most small and large applications for years to come.

As far as the initial dosage is concerned, the people behind this product recommend adding 1 fluid ounce for every 8 gallons. When refilling, the same 1 fluid once should be added for every 16 gallons.

Since the seal on the top of the bottle is not especially tight, we would recommend exercising caution when adding the solution.

In short, this product will make sure that the engine starts easily and runs smoothly no matter what.

Review of Star Brite Enzyme Fuel Treatment Star Tron Concentrate - Rejuvenate & Stabilize Old Gasoline

Additional Info

    Manufacturer


 

STA-BIL 22240

Treating and Stabilizing

STA-BIL 22240 has been formulated to maintain and optimize marine gasoline engines. From where we're standing, the product does an excellent job achieving these results.

First off, increasing the engine's water removal qualities, the solution works wonders preventing fuel systems' corrosion, which is essential as ar as marine environments are concerned.

Cleaning the fuel system, the product increases the engine's gas mileage and improves its in-season performance.

More than that, this agent is able to keep the fuel fresh as long as 12 months. For everyday protection, the manufacturers suggest adding 1 ounce per 10 gallons. Approaching seasonal storage, the dosage remains the same except, this time, you add that 1 ounce per 5 gallons of diesel fuel.

Harsh coastal climates lead not only to corrosion but also varnish and gum buildups. This solution is able to remove and prevent these buildups, making sure that the boat/jet ski is ready to go whenever you are.

We like pretty much everything about this product except its relatively short shelf life, so we would not suggest stocking up.

Besides that, STA-BIL 22240 is something that we would recommend to all customers who are dealing with marine gasoline engines.

Review of STA-BIL 22240 32 oz. 360 Marine Ethanol Treatment and Fuel Stabilizer

Additional Info

    Manufacturer


 

STA-BIL 22208

Cleansing Carburetors and Fuel Injectors

STA-BIL 22208 is different from the Star Tron Enzyme solution primarily because this agent can be immediately put to good use, while the product we've reviewed above will require concentration.

Apart from that, there's not much separating these additives. Both have no issues with all gasoline engines, which includes 2-cycle pre-mix engines. Both are able to keep the fuel fresh to ensure quick and effortless starts.

However, this solution will be keeping the fuel fresh for up to 2 years straight during storage, making the product better for long storage periods.

Just add 2 ounces per every 2.5 gallons of fresh fuel and you won't have to worry about the fuel remaining fresh.

Aside from that, the agent will be able to effectively remove water, preventing corrosion and cleansing carburetors and fuel injectors.

You also won't have to worry about rust, varnish, and gum since the product removes and prevents them too.

All that we have against this product is the fact that the short spout makes measuring pretty hard.

Other than that, STA-BIL 22208 is everything that these products are supposed to be. The 8-ounce bottle will be able to treat up to 20 gallons of fuel, making this STA-BIL fuel stabilizer plenty economical too.

Review of STA-BIL 22208 Fuel Stabilizer

Additional Info

    Manufacturer


 

STA-BIL 22295

Maximizing Engine Performance

STA-BIL 22295 has been engineered and formulated to combat ethanol-blended and non-ethanol blended fuels' side effects first and foremost.

Aside from that, this product matches the company's stabilizers and does pretty much the same preventive and active measures to maximize gasoline engine performance.

The agent will be stripping away carbon, gum, and varnish buildups that often inhibit engines' performance. Doing so, this additive will be making sure the fuel is getting burned more completely. Also, keeping the combustion chamber and injectors as clean as they can be, the agent enhances engine combustion and ensures smooth performance.

You can (and should) use this solution at every fill-up, pouring 1 ounce per 5 gallons of fuel.

The company has better storage options but you can also use this one to keep the fuel fresh for up to 12 months.

Again, not dissimilar to the company's stabilizers, this agent will be removing water and preventing corrosion damage, so you won't have to worry about longevity.

You'll probably have to worry and ensure safe storage though because the bottle's cap is not especially secure, so we would highly recommend avoiding dropping this bottle. Aside from that, you can do anything and entrust anything (gasoline engine related) to this product.

Review of STA-BIL 22295 Small Engine Ethanol Treatment and Fuel Stabilizer

Additional Info

    Manufacturer


 

What Is a Fuel Stabilizer?

Diesel and gasoline engines use diesel and gasoline fuel, that's the part that most people understand. What the uninitiated rarely understand is that, although there are major differences between these fuels, both require stabilizers to produce top-notch performance.

These fuel stabilizers rejuvenate and stabilize engines, making sure that the starts are smooth and effortless. Apart from that, these products work wonders preventing sludge/sediment formations.

More often than not, both engine types fall victim to rust, corrosion, varnish, and gum deposits that slow them down, increase emissions and reduce fuel economy. The additives we're talking about here are able to combat and prevent these issues.

Generally speaking, they're also pretty good at preventing algae, fungi, and bacteria buildups.

Sometimes, these stabilizers will also let you store different vehicles/machines/generators without draining the fuel. When that's the case, make sure to follow the manufacturers' recommended dosage instructions.

Fuel injectors cleaners and engine cleaners will help you maintain the engine as much as these stabilizers, so we would advise looking into them too.

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Publish Date: 2020-02-05 09:13:21