Generic P0R-15 Fuel Tank Sealer 8 oz — Internal Fuel-Resistant Lining for Small Tanks, Stops Leaks & Rust

P0R-15 Fuel Tank Sealer is an 8 fl oz professional interior lining designed to stop leaks and corrosion by bonding to metal and forming a fuel-resistant, non-porous barrier.

When a fuel tank develops pinholes, seams that let fuel escape, or internal rust, replacing the tank is often expensive and time consuming. This 8-ounce P0R-15 formula is made to coat the inside of small tanks—motorcycles, ATVs, lawn gear and other compact engines—so you can seal damage without swapping tanks. Applied after proper cleaning and metal prep, it cures to a hard lining that resists gasoline, diesel, ethanol blends, alcohols, and common additives.

How does this sealer stop leaks and rust inside a tank?

The product bonds directly to bare metal and cures into a hard, smooth coating that fills pinholes and covers rusted patches. By creating a continuous, non-porous surface, it prevents fuel from contacting compromised metal and stops corrosion progression.

• Adheres chemically to prepared metal surfaces
• Fills and seals seams, pinholes and pitted areas
• Creates a continuous, impervious lining
• Resists vibration and normal tank movement once cured

Is it compatible with all fuels and additives?

The cured lining is formulated to tolerate a wide range of fuels and fuel treatments so you won’t need to change your fuel type. It was developed to remain stable in contact with gasoline, diesel, ethanol-blended fuels and typical alcohols or additives used in vehicle and small-engine applications.

• Rated for gasoline and diesel exposure
• Resistant to ethanol blends and alcohols
• Stable with common fuel system additives
• Suitable for long-term fuel contact once fully cured

What preparation and coverage should I expect for an 8 fl oz can?

Proper adhesion depends on thorough cleaning and metal etching prior to application; this listing covers only the sealer itself, not the cleaner or etch. The 8 fl oz volume is intended for small tanks—larger tanks require a quart or more—so measure tank interior volume and plan the prep steps accordingly.

• Use a compatible tank cleaner and metal prep for best bond
• 8 fl oz suits small fuel tanks and spot repairs
• Cure fully before returning the tank to service to ensure resistance
• For a 25 gal tank, a 32 fl oz can is typically recommended

How durable is the cured lining in everyday use?

Once cured, the lining becomes a hard, fuel-proof surface designed to withstand constant exposure to fuel, moisture and the typical vibration of vehicles and equipment. It is intended as a long-lasting repair solution that can eliminate the need for costly tank replacement in many small-tank scenarios.

• Forms a hard, wear-resistant interior coating
• Resists chemical attack from fuels and additives
• Maintains integrity under normal engine vibration
• Eliminates many common small-tank replacement needs

Who is this for? P0R-15 Fuel Tank Sealer in the 8 fl oz size is aimed at DIY mechanics, motorcycle owners, ATV and small-engine users, marine hobbyists with compact tanks, and repair shops that handle small fuel systems. If you need a professional-grade interior tank lining to repair leaks, seal rust damage, or extend the life of a small fuel tank without replacing it, this concentrated sealer is formulated to meet those needs when used as part of a full tank-repair process.