Free Shipping!
On All Orders Over $99*

click to zoom in

have questions?

HAPPYFUEL HF-20 Premium Fuel Stabilizer (HF-20)

(No reviews yet) Write a Review
0.50 LBS

HAPPYFUEL HF-20 Premium Fuel Stabilizer (HF-20)


We’ve researched the best possible additives and created HappyFuel to bring you the highest quality and best performing fuel stabilizer available.

Instructions: Pour a full can of HappyFuel into your tank and fill up gasoline before storing your vehicle. This can treats 16-20 gallons of gasoline.

Danger: Contains petroleum distillates. Do not swallow, Do not breathe vapors, keep out of reach of children.

First Aid: If swallowed or inhaled, call physician, poison control or go to an emergency room. If it comes in contact with eyes, flush with clean water for 15 minutes.

California Proposition 65: HappyFuel, Fuel Stabilizer does not utilize or contain any of the materials listed on California’s Proposition 65 list. We will continue to monitor Proposition 65 and will update our labeling when necessary


Technical Information:

HappyFuel premium fuel stabilizer offers improvements in oxidation stability over conventional fuel stabilizers. With ethanol blended fuels and conventional gasoline, addressing humidity in your fuel becomes critical. HappyFuel’s premium chemistry addresses oxidation, lubrication, vapor pressure suppression, and water scavenging, thereby addressing the issues of fuel storage from all mechanistic ends. It does this by:

  1. Bonding with gasoline compounds to prevent evaporation of low-end components
  2. Forming a protective layer along the engine metal that prevents condensed water from corroding the metal
  3. Prevent corroded metal ions from destabilizing gasoline compounds into resin, which can hinder fuel injection components
  4. Scavenge water to prevent water deposits at the bottom of the tank, limiting biological activity.

We can ship to virtually any address in the US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

Need help? We're available at+1 (800) 664-8116 - Email us
to top