Gas Tank Sealer Reviews: What Is The Best Gas Tank Sealer To Use?

There is indeed a fact that replacing fuel tanks is definitely expensive. Rather than replacing the tank why not consider sealing it? There could be numbers of cleaners as well as best gas tank sealers in order to get some more life out of the old gas tank that you have. You just have to choose which one is the best to use, and there is just a need for you to properly apply the product.

If you don’t have any idea about which gas tank sealer to use, then reading this article could help you. There is the fact that it could be hard to shop sealers for the gas tank since it is confusing whether which one is the best from among wide options. With that, this best gas tank sealer reviews could serve as your best guide in finding the right product to use.

Quick Comparison: Top 4 Best Gas Tank Sealers

From wide options in the market today when it comes to gas tank sealers, some of the best ones could include the following:

**Below, you'll find my more detailed reviews about the gas tank sealer, but you can also click the links above to see current prices or read customer reviews on Amazon.

You could indeed be guided by this quick overview of the best gas tank sealers in the market today.

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Take A Look At The Best Gas Tank Sealer Reviews

Now let’s take a closer look of these gas tank sealers that are considered as great options for you to choose from.

This one is considered as an internal fuel tank liner being designed in order to seal leaks as well as prevent further rusting.

It is a sealant that definitely stands out at sealing pin-hole leaks which happen along seams or wherein straps wrap around the gas tank.

This gas tank sealer could form a very flexible and tough membrane which would never crack or flake like other products do. It will not plug line or it wouldn’t cause any damage to the engine once properly used.


User Rating:

There will be an assurance of preventing future rust too since condensation would not contact the metal. This gas tank sealer would take almost eight hours to dry.


Perfectly covers rusts and seals leaks
Resistant to alcohol and some of the most fuel additives
This gas tank sealer will stay flexible and would not peel off or crack
It is in bright color and the coverage is indeed easily visible


Can only be used for lining the inside of the fuel tanks that contain diesel or gasoline fuel
Cannot be used with biodiesel fuel
Cannot be used with water or water-based substances notably potable water
This product couldn’t be sprayed even right after thinning
Cannot be used on any plastic or fiberglass

Indeed, this kit would already include almost everything that you need to clean, prep and to permanently seal up to twenty-five gallon tanks. There will be an assurance of satisfaction and there will be detailed instructions being included as well.

This is a super and single component as well as ready to use fuel tank sealer. It is mainly formulated in order to stop corrosion and rust through forming a tough and fuel impervious coating at the same time sealing the small pinholes and weld seams simultaneously.


Via Amazon

User Rating:

This gas tank sealer kit could also be used best on interior painting, remodeling, detailed areas and exterior painting. There will be an assurance of preventing future rust too since condensation would not contact the metal. This gas tank sealer would take almost eight hours to dry.


This product adds protection
It has low odor and great color
It coats well and a long lasting gas tank sealer


The said product is considered to be messy
This one might render uneven coat

This one was being formulated and developed due to the high clamor for a high-tech sealer impervious to almost all fuels such as the new Stage II fuels that have higher alcohol content.

This gas tank sealer has greater strength and also resistant from fuels and it doesn’t contain Methyl Ethyl Ketone which is known as a highly flammable or deadly carcinogen.


Via Amazon

User Rating:


Resistant to all fuels, solvents, additives and alcohol
Stops the rust, leaks, and corrosion permanently
Light gray color intended for a lot easier viewing inside of the tank
Seals seams and pinholes
Chemically bonds to metal surfaces


It could be hard to remove this sealer out of the tank once it starts peeling

This kit will also contain almost everything that you need once into stripping and sealing a tank of up to 12 gallons. It could strip previous liners or coaters and is considered as a silver metallic permanent coating. 

This one could definitely eliminate all corrosion and rust. It is also referred to be impervious to all alcohol additives, fuels, and most solvents. The said gas tank sealer is also flexible to expand and to contract. 


User Rating:

This could withstand temperatures of almost up to 500 degrees Fahrenheit. And most especially, it is a product known to be environmentally friendly, non-flammable and would contain no Methyl Ethyl Ketone.


Long lasting
Great color
Adds great protection
Coats and seal the tanks well


This is not a product that should be considered if you have a 15-gallon tank
Too little sealer in the kit that could cover the surface area

Product Item

Product Dimensions

Item Weight



My Rating

10.2 x 7.2 x 7 inches

5.85 pounds




KBS Coatings 53000

10.5 x 8.4 x 8.2 inches

9.2 pounds




POR-15 49216 U.S.

2.8 x 2.8 x 3 inches

11.2 ounces




KREEM Gas Tank Sealer Kit

10.4 x 8.6 x 8.4 inches

9.4 pounds



What To Do Before Sealing The Gas Tank

But before sealing your gas tank, there is a need to consider first thing first. And that is to clean the gas tank first. You should begin with draining the fuel out and then remove the sending unit as well as filter assemblies and all the associated fittings.

If the tank is already dry, you could knock the surface rust down through the use of a part of the chain as well as slide it around inside the gas tank. Right after the tank dries, you could now use a cleaner and prep agent as for sealing the remaining rust and also to remove the remaining contaminants. The process of applying the product might vary based on the instructions of your chosen product.


Lining The Gas Tank

In lining the gas tank, you must tape over all the holes in the gas tank except the one wherein you will pour the sealer in. Those tanks having less than 12 gallons could be done with a quart, however, those tanks that are larger than 12 gallons would need the additional sealer.


Right after pouring in the gas tank sealer, you should tip the tank back and forth and side to side slowly making sure that there is an even coating within the tank. The excess sealer could be drained and be placed in a container for either disposal or reuse.

It is also advised that you just turn the tank to where the excess would drain out of the opening into a pan. If it’s already drained, you could simply remove the tape from the additional opening ensuring maximum flow of air. And allow the tank to air dry for at least eight to twenty-four hours. If the gas tank has dried, it would be safe for you to reassemble and place back into where it is being used.

My Pick For The Best Gas Tank Sealer

There are indeed many sealers that we could choose from and it is our sole decision whether which one meets our needs. For me, I would pick the KBS Coatings 52050 for the best gas tank sealer. I chose this one since it offers the best features that a gas tank cleaner should be.

The process of application is also too easy and there is an assurance that gas tank could actually be sealed. The price of the product is also reasonable enough and it has higher customer rating too compared to other sealers. Indeed, with this gas tank sealer, no doubt that my gas tank will be like a new one.

Once planning to seal your gas tank, choose products that will definitely help you come up with the best result. You must not choose a product simply for the sake of sealing the gas tank rather choose a gas tank sealer with the assurance of quality. Gas tanks are somewhat dangerous and so being extra careful when it comes to sealing them should be considered. And one way of doing so is to choose the best gas tank sealer available today.

You could also watch this in order to be guided more about fuel tank liner or gas tank sealer.

Let us know what you think in the comments below.

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Lucas Knight

Over the past 10 years, Lucas Knight has been a motorcycle rider. He has built up an incredible passion for travelling by motorbike and always wishes to contribute to motorcyclist community. This is the reason why he created where his passion is turned into useful and interesting information to the motorcycle lover. Follow his facebook and twitter or subcribe to his website to receive more useful information in motorcycle world.

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