10 Best Fuel Tank Coating of 2025

Tested and Reviewed: Top 10 Fuel Tank Coating deals with expert ratings from 8.1 to a perfect 10

May 2026 Edition

Editor's Choice

9.7

KBS Coatings

KBS Coatings 52000 Cycle Tank Sealer Kit, Complete Kit - Seals Up To 5 Gallon Tank, Lightly Pigmented Silver

Editor's bottom line:

“This fuel tank coating is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

COMPLETE 3-STEP SYSTEM EVERYTHING INCLUDED: Kit contains a quart of KBS Klean heavy-duty degreaser, a quart of RustBlast rust remover & metal etch, 8 oz. of Gold Standard Tank Sealer, nitrile gloves, a stir stick, and step-by-step instructions no extra purchases needed to get the job done right.
PERMANENTLY SEALS RUST & STOPS CORROSION: Gold Standard Tank Sealer forms a super-tough, non-porous barrier that bonds directly to rust and bare metal, sealing pinholes and weld seams in one application. Once cured, it won't crack, peel, or flake even years later.
FUEL & ETHANOL PROOF FORMULA: The cured coating is impervious to gasoline, diesel, ethanol blends, alcohol additives, and most solvents making it compatible with all modern fuel types including E10, E15, and E85 blends.
WORKS ON MOTORCYCLES, GENERATORS, MOWERS & MORE: Sized for tanks up to 5 gallons, this kit is ideal for motorcycle and dirt bike tanks, snowmobiles, ATVs, lawn tractors, generators, and other small utility tanks steel, aluminum, and fiberglass compatible.
PROFESSIONAL RESULTS WITHOUT SPECIAL SKILLS: The included RustBlast prep step reduces flash rust by over 80% and creates an ideal anchor profile for the sealer, so you get a durable, professional-grade finish even on a first-time DIY project. Made in the USA by KBS Coatings.

Show Price

Picked by 397 people today

9.5

KBS Coatings

KBS Coatings 53000 Auto Fuel Tank Sealer Kit, Seals Up to 25 Gallon Tank

Main Highlights

The KBS Auto Fuel Tank Sealer Kit contains everything needed to seal a tank of up to 25 gallons. It is an All Inclusive Kit!
This Kit Includes KBS Klean, RustBlast, Tank Sealer, Gloves and Complete Directions.
The Tank Sealer Permanently seals pinholes & weld seams and is Impervious to all fuels, alcohol additives and most solvents.
This Kit eliminates all rust and corrosion meaning no clogged fuel filters.
The Tank Sealer is flexible and able to expand and contract with your tank.

Show Price

9.5

KCINT

RED KOTE FUEL TANK LINER, GAS TANK SEALER, FUEL TANK SEALER 1 QT. STOPS RUST, CORROSION AND LEAKS

Main Highlights

This tank sealer is a polymer coating resistant to gasoline, diesel fuel, alcohol and other fuel additives, it's major use is to seal leaking fuel tanks (1 Qt will seal metal tank up to 14 gallon)
Easy to use if the directions are followed closely. It seals the of small leaks that often form, you fix the obvious leaks and the sealer seals the rest
Contrary to what some people will tell you, rust does form inside gas tanks. The cause is condensation and water in gas.
This sealer seals rust under the coating so it cannot flake off to plug fuel-line filters or cause engine damage. Further rusting is reduced also.
The coating is very flexible and does not crack as do some of the others. This gives the repair a much longer life.
The polymer was specifically chosen because of its tight adhering qualities. In comparison to some other coatings, this tank sealer does not peel off even when the metal is bent. This protects against loosening of the coating by vibration or denting of the tank.
Holes up to 1/32nd may be coated and sealed safely. Rust is sealed in so that it cannot flake off.
Tank can be cleaned with and the sealer can be thinned with M.E.K. (methyl ethyl ketone)

Show Price

9.2

POR-15

POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Resistant to All Fuels, Alcohols and Additives, 8 Fluid Ounces

Main Highlights

For Metal Fuel Tanks
Non-Porous Sealant
Stops and Prevents Rust
For Use Inside Fuel Tanks

Show Price

9.0

KBS Coatings

KBS Coatings 5300 Gold Standard Tank Sealer - 1 Pint

Main Highlights

Impervious to all fuels, alcohol additives & most solvents
Permanently seals pinholes & weld seams
Flexible to expand & contract
Withstands Temperatures of up to 600F

Show Price

8.8

KBS Coatings

KBS Coatings 52050 Large Cycle Tank Sealer Kit, Seals Up to 12 Gallon Tank

Main Highlights

The KBS Large Cycle Tank Sealer Kit contains everything needed to seal a tank of up to 12 gallons. It is an All Inclusive Kit!
This Kit Includes KBS Klean, RustBlast, Tank Sealer, Gloves and Complete Directions.
The Tank Sealer Permanently seals pinholes & weld seams and is Impervious to all fuels, alcohol additives and most solvents.
This Kit eliminates all rust and corrosion meaning no clogged fuel filters.
The Tank Sealer is flexible and able to expand and contract with your tank.

Show Price

8.6

POR-15

POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces

Main Highlights

WHY CHOOSE POR-15 FUEL TANK SEALER? POR-15 Tank Sealer is specifically formulated to provide a permanent seal with superior strength and resistance to all fuels, including the new Stage II fuels which have a high alcohol content.
STOP RUST - POR-15 is the gold standard in rust prevention, and our Fuel Tank Sealer is no exception. Formulated and developed in our laboratories due to the demand for a high-tech sealer impervious to all fuels, POR-15 is essential in preventing rust and corrosion for long lasting results.
PREP FOR SUCCESS - Drain all fuel from tank, remove tank from vehicle, and clean out tank. All fuel tanks are dirty and have to be cleaned out before sealing. If you try to seal a tank without cleaning it first, the new coating will fail, because Tank Sealer wont stick to gum and varnish. After taking preliminary steps for cleaning and prep, use as directed for an excellent finish.
WHEN DO I NEED THIS? POR-15 Fuel tank sealer is perfect for automotive restoration. Renew your car, truck, or motorcycle fuel tank through our simple, single application coating. Allow proper time to cure for impervious protection from fuel, alcohol, corrosion and rust.
OUR SATISFACTION COMMITMENT - At POR-15 we strive to bring the ultimate in rust prevention. Known for the unbeatable 3-step stop rust system, POR-15 is trusted by DIY & Professionals. We are committed to innovation, quality control, and excellent customer service. If you are not satisfied, let us know & well do everything we can to make it right!

Show Price

8.3

KBS Coatings

KBS Coatings 5200 Gold Standard Tank Sealer - 8 fl. oz., Silver

Main Highlights

Package Dimensions: 7.62 H x 7.62 L x 7.62 W (centimetres)
Country of Origin : United States
Package Weight: 0.226 kilograms
Flash point: 40.0

Show Price

8.1

POR-15

POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Resistant to All Fuels, Alcohols and Additives, 128 Fluid Ounces

Main Highlights

WHY CHOOSE POR-15 FUEL TANK SEALER? POR-15 Tank Sealer is specifically formulated to provide a permanent seal with superior strength and resistance to all fuels, including the new Stage II fuels which have a high alcohol content.
PERMANENT SEAL - POR-15 is the gold standard in rust prevention, and our Fuel Tank Sealer is no exception. Formulated and developed in our laboratories due to meet the demand for a high-tech sealer impervious to all fuels. POR-15 is essential for long lasting results.
APPLICATION - Drain all fuel from tank, remove tank from vehicle, and clean out tank. All fuel tanks are dirty and have to be cleaned out before sealing. Use both our Cleaner Degreaser and Metal Prep before applying sealer. If you try to seal a tank without cleaning it first, the new coating will fail, because Tank Sealer wont stick to gum and varnish. After taking preliminary steps for cleaning and prep, use as directed for an excellent finish.
WHEN DO I NEED THIS? POR-15 Fuel tank sealer is perfect for automotive restoration. Renew your car, truck, or motorcycle fuel tank through our simple, single application coating. Allow proper time to cure for impervious protection.
OUR SATISFACTION COMMITMENT - At POR-15 we strive to bring the ultimate in rust prevention. Known for the unbeatable 3-step stop rust system, POR-15 is trusted by DIY & Professionals. We are committed to innovation, quality control, and excellent customer service.

Show Price

8.1

POR-15

POR-15 49204 Fuel Tank Sealer 32 fl oz

Main Highlights

WHY CHOOSE POR-15 FUEL TANK SEALER? POR-15 Tank Sealer is specifically formulated to provide a permanent seal with superior strength and resistance to all fuels, including the new Stage II fuels which have a high alcohol content.
PERMANENT SEAL - POR-15 is the gold standard in rust prevention, and our Fuel Tank Sealer is no exception. Formulated and developed in our laboratories due to meet the demand for a high-tech sealer impervious to all fuels. POR-15 is essential for long lasting results.
APPLICATION - Drain all fuel from tank, remove tank from vehicle, and clean out tank. All fuel tanks are dirty and have to be cleaned out before sealing. Use both our Cleaner Degreaser and Metal Prep before applying sealer. If you try to seal a tank without cleaning it first, the new coating will fail, because Tank Sealer wont stick to gum and varnish. After taking preliminary steps for cleaning and prep, use as directed for an excellent finish.
WHEN DO I NEED THIS? POR-15 Fuel tank sealer is perfect for automotive restoration. Renew your car, truck, or motorcycle fuel tank through our simple, single application coating. Allow proper time to cure for impervious protection.
OUR SATISFACTION COMMITMENT - At POR-15 we strive to bring the ultimate in rust prevention. Known for the unbeatable 3-step stop rust system, POR-15 is trusted by DIY & Professionals. We are committed to innovation, quality control, and excellent customer service.
COVERAGE - Quart (32 fl oz) can is enough to coat the inside of a 25 gallon tank

Show Price

Our Best Overall Choice

Best Choice

9.7

KBS Coatings

KBS Coatings 52000 Cycle Tank Sealer Kit, Complete Kit - Seals Up To 5 Gallon Tank, Lightly Pigmented Silver

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

COMPLETE 3-STEP SYSTEM EVERYTHING INCLUDED: Kit contains a quart of KBS Klean heavy-duty degreaser, a quart of RustBlast rust remover & metal etch, 8 oz. of Gold Standard Tank Sealer, nitrile gloves, a stir stick, and step-by-step instructions no extra purchases needed to get the job done right.
PERMANENTLY SEALS RUST & STOPS CORROSION: Gold Standard Tank Sealer forms a super-tough, non-porous barrier that bonds directly to rust and bare metal, sealing pinholes and weld seams in one application. Once cured, it won't crack, peel, or flake even years later.
FUEL & ETHANOL PROOF FORMULA: The cured coating is impervious to gasoline, diesel, ethanol blends, alcohol additives, and most solvents making it compatible with all modern fuel types including E10, E15, and E85 blends.
WORKS ON MOTORCYCLES, GENERATORS, MOWERS & MORE: Sized for tanks up to 5 gallons, this kit is ideal for motorcycle and dirt bike tanks, snowmobiles, ATVs, lawn tractors, generators, and other small utility tanks steel, aluminum, and fiberglass compatible.
PROFESSIONAL RESULTS WITHOUT SPECIAL SKILLS: The included RustBlast prep step reduces flash rust by over 80% and creates an ideal anchor profile for the sealer, so you get a durable, professional-grade finish even on a first-time DIY project. Made in the USA by KBS Coatings.

Show Price

Deals are Live

Special Amazon deal ends in: