Stanadyne Gasoline Fuel Additive


Stanadyne Gasoline Additive is designed to protect Gasoline Direct Injection and traditional gas fuel systems, while restoring engine performance. This unique formula helps eliminate deposits that form on critical fuel system and engine components to keep those components clean, lubricated, and maintenance free.

Benefits Include:

  • Improves Fuel Economy and restoration of Horsepower & Performance
  • Lubricates Fuel System (Injectors & Pump)
  • Reduces Piston & Piston ring friction
  • Detergents that clean, prevent deposit build up on Intake Valves & Injectors
  • Antioxidants to keep fuel fresh longer
  • Prevents Rust & Corrosion in the fuel system
  • Ethanol Protection
  • Catalytic Converter Safe
  • Also ideal for Recreational Vehicles and Small Engines



Part Number Size Unit Per Case Treatment
38557 8 oz. (237 ml) 24 18 gal. (68 L)

Product Weight: 13.0 lb

Stanadyne Gasoline Fuel Additive is currently in stock and ready to ship within 24 business hours.

We are currently only shipping to addresses in Canada.

We offer free shipping to provinces in Canada on all orders over $200.00 and taxes are charged based on your provinces tax %. Items are shipped via Purolator Ground. Delivery dates are good faith estimates only and are quoted in "business days"; this does not include weekends and statutory holidays. PO Box addresses are not acceptable for delivery. For shipping to the Northern Territories, please e-mail us first for a rate quote.

Free pick-up is available at our Edmonton location but you must provide your order number and show your identification.

All orders under $200.00 are subject to a $15.00 shipping fee.

For expedited shipping and more details, click on the link below:

Customer Reviews

Based on 6 reviews
From the makers of the only big 3 endorsed fuel additive manufacturer
Thanks for taking the time to write a review Travis. It's always nice to hear real world opinions on these products.
I'm glad to hear you're having such good success with the additive!
Made a noticeable difference
Glad to hear you are having such great success with the Stanadyne product line!
Gasoline additive
Really Good