The Ultimate Guide to Fuel Tank Coating: Protecting Your Investment

If you're looking to extend the life of your fuel tanks, understanding fuel tank coating is essential. At Milles Equipment Company, we specialize in providing top-notch solutions to ensure your fuel tanks remain in optimal condition. Whether you're dealing with an old, rusty tank or looking to prevent future issues, our expert guide will walk you through everything you need to know about fuel tank coating.

What is Fuel Tank Coating?

Fuel tank coating involves applying a specialized sealant to the interior of fuel tanks. This process helps to prevent rust, corrosion, and leaks, ensuring the longevity and reliability of your fuel tanks. The coating acts as an impervious barrier, keeping harmful elements away from the tank's metal surfaces.

Benefits of Fuel Tank Coating

1. Prevents Rust and Corrosion

Fuel tanks, especially those made of metal, are susceptible to rust and corrosion. A high-quality fuel tank sealer creates a protective layer that shields the tank from moisture and contaminants, significantly reducing the risk of rust and corrosion.

2. Extends Tank Lifespan

By preventing rust and corrosion, fuel tank coating extends the lifespan of your fuel tanks. This means fewer replacements and repairs over time, saving you money and hassle in the long run.

3. Maintains Fuel Quality

Rust and corrosion can contaminate fuel, leading to engine problems and reduced performance. A coated fuel tank helps maintain the purity of your fuel, ensuring your engines run smoothly and efficiently.

4. Cost-Effective

While it might seem like an upfront investment, coating your fuel tanks is a cost-effective solution compared to frequent tank replacements and repairs. A small expense now can lead to significant savings in the future.

Common Misconceptions About Fuel Tank Coating

Misconception 1: Coating is Only for Old Tanks

Many people believe that fuel tank coating is only necessary for older, rusty tanks. However, even new tanks can benefit from a protective coating. Coating a new tank ensures it remains in excellent condition for a longer period, preventing issues before they start.

Misconception 2: Coating is a One-Time Solution

While a quality coating can last for years, it's not a one-time fix. Regular inspections and maintenance are crucial to ensure the coating remains intact and effective.

Step-by-Step Guide to Fuel Tank Coating

Step 1: Clean the Tank

Begin by thoroughly cleaning the interior of the fuel tank. Remove any debris, rust flakes, or old fuel residues. This can be done using a combination of water, detergent, and mechanical agitation (like nuts and bolts). Ensure the tank is completely dry before proceeding to the next step.

Step 2: Seal the Openings

To make the tank watertight, seal all vent holes and openings, leaving only one for adding the cleaning solution and sealer.

Step 3: Apply the Cleaner

Mix the fuel tank sealer cleaner with hot water and pour it into the tank. Seal the tank completely and shake it vigorously to ensure the cleaner reaches every corner. Let it sit for about an hour, shaking periodically.

Step 4: Rinse and Dry

After the cleaning solution has done its job, pour it out and rinse the tank thoroughly with clean water. Ensure all residues are removed. Let the tank dry completely, preferably overnight.

Step 5: Apply the Rust Blaster

Pour the rust blaster into the dry tank and allow it to soak for 30-60 minutes. This step is crucial for removing any remaining rust and preparing the surface for the coating.

Step 6: Final Rinse and Dry

Drain the rust blaster and rinse the tank thoroughly one last time. Make sure the tank is completely dry before moving on to the sealing process.

Step 7: Apply the Fuel Tank Sealer

Pour the entire can of the Gold Standard Tank Sealer into the tank. Seal the tank and rotate it slowly, ensuring the sealer coats the entire interior surface. This process might require assistance to handle larger tanks efficiently.

Step 8: Drain Excess Sealer

After the sealer has coated the entire tank, drain any excess and let the tank dry for at least 48 hours. This drying period is essential for the sealer to cure properly.

Step 9: Inspect the Coated Tank

Once the tank is dry, inspect the interior to ensure a smooth, even coating. Your fuel tank should now look like new, with a robust protective layer ready to extend its life.

Additional Considerations

Diesel Tanks

Our coating solutions are equally effective for diesel tanks. Diesel fuel can cause additional wear on tanks, but a properly applied tank liner can prevent these issues, ensuring your diesel tanks remain in top condition.

Pinhole Leaks

Even the smallest pinhole can cause significant issues in a fuel tank. Our fuel tank sealers are formulated to seal a tank thoroughly, covering all imperfections, including pinholes, to provide a smooth, impervious surface.


Whether you need to seal a gas tank or a diesel tank, our products offer the versatility and durability required for various applications. From cars to industrial equipment, diesel or gas tank sealers provide unmatched protection.

By following this guide, you can ensure your fuel tanks are well-protected and maintained, providing you with peace of mind and reliable performance for years to come. Visit our website or call us today to get started on preserving the integrity of your fuel tanks.

Invest in the best with Milles Equipment Company and experience the difference in quality and performance. Your tanks deserve the best care – let us help you achieve it. Contact us now at 303-493-9780 for expert advice and premium products designed to protect your valuable assets.

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