
POR-15 Fuel Tank Sealer is a product used to seal fuel tanks and prevent rust, corrosion, and leaks. It is designed to be used on automotive vehicles such as cars, trucks, and motorcycles, and is especially useful for diesel tanks. The product is available in different sizes, including 8 fluid ounces, 128 fluid ounces, and a small formula pint or quart. The manufacturer recommends using 3 quarts for a 25-gallon tank, with each quart covering up to a 25-gallon tank and 2 pints recommended for most car tanks. The product has received positive reviews for its effectiveness, ease of application, and quality, with some customers reporting successful use in sealing diesel tanks. However, there are mixed results for durability, with some customers experiencing cracking.
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What You'll Learn

Superior strength and fuel resistance
POR-15 Fuel Tank Sealer is a high-strength, fuel-resistant sealant designed to stop rust, corrosion, and fuel leaks. It is formulated to be impervious to all fuels, including high-alcohol content fuels, and offers superior protection for your vehicle's fuel tank.
The sealant is made from a combination of chemicals, including 1, 2, 4-Trimethylbenzene, Naphtha (Petroleum), Hydrotreated Heavy, Xylene, Solvent Naphtha (Petroleum), Light Arom, Isocyanic Acid, and Polymethylenepolyphenylene Ester. This unique blend creates a flexible, non-porous film that effectively seals pinholes and seams in fuel tanks, preventing leaks and rust formation.
The high strength and fuel resistance of POR-15 Fuel Tank Sealer make it ideal for various vehicles, including cars, trucks, and motorcycles. It is a popular choice for diesel tanks and generator gas tanks, as it provides an effective barrier against diesel fuel leaks and corrosion. The sealant's ability to withstand high-alcohol content fuels also makes it suitable for use with the new Stage II fuels.
One of the key advantages of POR-15 Fuel Tank Sealer is its simple, single-application process. Unlike other sealants that require multiple coats, POR-15 Fuel Tank Sealer can be applied in one easy step, saving time and effort. However, it is important to follow the proper cleaning and preparation procedures before applying the sealant to ensure optimal adhesion and performance.
The superior strength and fuel resistance of POR-15 Fuel Tank Sealer make it a reliable choice for those seeking to restore and protect their vehicle's fuel tank. With its ability to stop rust, corrosion, and leaks, this sealant provides long-lasting protection and peace of mind for vehicle owners.
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Stops rust, corrosion, and leaks
POR-15 Fuel Tank Sealer is a paint-like product that can be used to seal rusty and leaky gas tanks. It is formulated to be impervious to all fuels, including Stage II fuels with high alcohol content. The sealer is also resistant to alcohols and additives.
The product is designed to stop rust, corrosion, and fuel leaks. It seals pinholes and seams, creating a non-porous, flexible film. POR-15 Fuel Tank Sealer has superior strength and fuel resistance, making it ideal for automotive restoration. It can be used to renew the fuel tanks of cars, trucks, and motorcycles, and boats.
The application process involves draining the fuel from the tank, removing the tank from the vehicle, and cleaning out the tank thoroughly. After the preliminary steps of cleaning and preparation, the sealer can be applied as directed. It is important to allow proper time for the sealer to cure and provide impervious protection.
Customers have found the product effective, especially for diesel tanks and generator gas tanks. They appreciate its easy application and good quality. Some customers have noted that it forms a rock-hard finish. However, there are mixed results regarding durability, with some customers experiencing cracking.
It is important to note that the success of the sealer depends on proper cleaning and preparation of the tank. Sandblasting is often recommended to ensure a good bond and prevent peeling. While the sealer can be painted over, it is crucial to ensure that the surface is clean for the paint to adhere properly.
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Seals pinholes and seams
POR-15 Fuel Tank Sealer is a paint-like product used to seal pinhole leaks and seams in rusty and leaky fuel tanks. It is designed to be used on automotive fuel tanks, including cars, trucks, and motorcycles. The product is applied as a single coating and is resistant to all types of fuel, including diesel, as well as alcohol and additives.
The key to successfully using POR-15 Fuel Tank Sealer to seal pinholes and seams is thorough cleaning and preparation of the fuel tank. It is important to drain all fuel from the tank, remove the tank from the vehicle, and clean it thoroughly before applying the sealer. Sandblasting and degreasing are often recommended as effective methods to prepare the tank surface. In addition, allowing proper time for the sealer to cure is crucial for achieving impervious protection.
When using POR-15 Fuel Tank Sealer to address pinholes and seams, it is essential to follow the instructions provided by the manufacturer. While some users have reported successful results by applying the sealer only to the specific area of the leak, it is generally recommended to follow the instructions for full tank treatment to prevent issues like blistering or flaking. It is also important to note that the product may not work effectively if the tank is not thoroughly cleaned and prepared before application.
POR-15 Fuel Tank Sealer has received positive reviews from customers, who appreciate its easy application and good quality. Many users have reported successful outcomes in sealing pinhole leaks and seams, particularly in diesel tanks. However, there are also mixed reviews regarding durability and rust prevention, with some customers experiencing cracking over time.
Overall, POR-15 Fuel Tank Sealer is a reliable option for sealing pinholes and seams in diesel fuel tanks. With proper preparation, application, and curing time, it can effectively renew automotive fuel tanks and provide protection against rust, corrosion, and leaks.
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Resistant to all fuels, alcohols, and additives
POR-15 Fuel Tank Sealer is a high-tech sealer that is impervious to all fuels, including Stage II fuels with a high alcohol content. It is perfect for automotive restoration and can renew your car, truck, or motorcycle fuel tank through a simple, single application coating.
The sealer is also resistant to additives and provides impervious protection from fuel, alcohol, corrosion, and rust. It is formulated to prevent rust and corrosion for long-lasting results. POR-15 is trusted by DIY and professionals for its unbeatable 3-step stop rust system.
The product has received positive reviews from customers who find it effective, especially for diesel tanks and generator gas tanks. They appreciate its easy application and good quality. One customer noted that it forms a rock-hard finish. Another customer successfully used it to recondition a motorcycle fuel tank, stating that "the ethanol-laced fuel doesn't seem to bother it."
However, some customers have reported mixed results with durability and rust prevention, with some experiencing cracking. It is important to follow the manufacturer's instructions and allow proper time to cure for the best results.
With its superior strength and fuel resistance, POR-15 Fuel Tank Sealer is an excellent choice for sealing and restoring fuel tanks, providing protection from rust, corrosion, and leaks.
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Effective for diesel tanks
POR-15 Fuel Tank Sealer is a paint-like product that can be used to seal rusty and leaky gas tanks. It is formulated to be impervious to all fuels, including diesel, and offers superior strength and fuel resistance. The product is also resistant to alcohols and additives, making it suitable for use in fuel tanks with high alcohol content.
The sealer is effective in stopping rust, corrosion, and fuel leaks. It seals pinholes and seams, creating a non-porous, flexible film that protects the tank. POR-15 Fuel Tank Sealer is suitable for use on various vehicles, including cars, trucks, motorcycles, and boats. It is perfect for automotive restoration and renewing old fuel tanks.
Customers have found the product particularly effective for diesel tanks and generator gas tanks. They appreciate its easy application and good quality. Some customers have successfully used it to restore old and rusty diesel tanks, giving them new life. The coating quality has received positive feedback, with one customer noting it forms a rock-hard finish.
However, it is important to note that the durability and rust prevention of the sealer may vary. While some customers have reported good protection, others have experienced cracking. Additionally, the product may not be cost-effective for some, as the quantity provided is relatively small.
Applying the POR-15 Fuel Tank Sealer involves a thorough cleaning process. The manufacturer recommends draining all fuel from the tank, removing the tank from the vehicle, and cleaning it thoroughly. Sandblasting and metal etching are often recommended to ensure a clean surface for the sealer to adhere to. It is crucial to follow the manufacturer's instructions and take the necessary safety precautions during the application process.
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Frequently asked questions
POR 15 Fuel Tank Sealer is a paint-like product that can be used to seal rusty and leaky gas tanks. It is formulated to be impervious to all fuels, including Stage II fuels with high alcohol content.
To use POR 15 Fuel Tank Sealer, first drain all fuel from the tank, remove the tank from the vehicle, and clean out the tank. Then, apply the sealer according to the instructions provided. Allow proper time for the sealer to cure and provide impervious protection.
POR 15 Fuel Tank Sealer is available for purchase on Amazon and Eastwood. It can be bought in different sizes, including 8 fluid ounces, 128 fluid ounces, and pints.











































