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 $25.00 shipping fee.

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

Customer Reviews

Based on 6 reviews
Travis B.
From the makers of the only big 3 endorsed fuel additive manufacturer

I've been using the diesel injector cleaner and lubricity additive for awhile now. In our new colorado diesel, our old trucks and our tractor too. It's definitely made a difference. Especially with the ULSD being used now. So I thought it only proper to try the gasoline additive as well. We have lots of gas engines on our property that sit a lot and are used seasonally and with only being able to procure ethanol based fuel now, we needed something to protect them. This stuff should do nicely and at a good price too. Thanks again to DPC.

Thanks for taking the time to write a review Travis. It's always nice to hear real world opinions on these products.

Yohan U. (Mississauga, Ontario, Canada)

Excellent service and excellent product. Been using it for a while now and couple of my friends love it too after I gave them a bottle to try out. All their misfiring, over revving, studdering issues gone.

I'm glad to hear you're having such good success with the additive!

Wayne a.C.H. (Edmonton, Alberta, Canada)
Made a noticeable difference

We have been using Stanadyne Performance Formula All Season Diesel Fuel additive for 15 years and we are believers. We have just tried the Stanadyne Gasoline Fuel Additive on our 2006 Toyota Sienna van and are seeing noticeable results ... better starting, smoother running and less hesitation. So far we have run through two bottles (2 tanks of fuel) on this vehicle which was never previously treated with a fuel injection cleaner. I hope that it continues to improve with more use as the fuel system cleans up. I plan to continue to use this conditioner with every fill up. I also will add it to my small engine gas and hope to see similar result.

Glad to hear you are having such great success with the Stanadyne product line!

Kris L.
Gasoline additive

Convenient size of bottle to put in the fuel tank of my 2014 Ford Flex

Benjamin L.
Really Good

Really good stuff, sure made a difference