

⛽ Power up your diesel, dominate the road with Stanadyne Performance Formula!
Stanadyne Diesel Performance Formula 38566 is a premium 64-ounce diesel fuel additive designed to enhance engine performance by improving fuel economy, horsepower, and torque. Approved by major OEMs like GM, Ford, Deere, and Navistar, it meets the rigorous Cummins L10 Superior Test for fuel cleanliness. Ideal for year-round use, this additive protects diesel engines from fuel-related problems and is compatible with other Stanadyne products for flexible dosing.
| ASIN | B000M5QPSY |
| Best Sellers Rank | #26,448 in Automotive ( See Top 100 in Automotive ) #36 in Diesel Additives |
| Brand Name | Stanadyne |
| Compatible with Vehicle Type | Bus, Truck |
| Container Type | Can, Jug |
| Customer Reviews | 4.8 4.8 out of 5 stars (734) |
| Liquid Volume | 64 Fluid Ounces |
| Manufacturer | Stanadyne |
| Manufacturer Part Number | 38566 |
| UPC | 753167924442 026508385661 |
| Unit Count | 64.0 Fluid Ounces |
M**B
Great product
Awesome product. Great price. Use it in my 2018 Duramax.
T**M
Fuel treatment
Works great treating fuel.
G**R
Diesel fuel additive
Great product best there is for your diesel fuel needs
A**R
Great for my Diesel
Great value and quality product
S**H
Might buy again
Stanadyne does not provide the results of HFRR results for this additive. Contacted them HFRR data - they answered that they outsourced additives to a different company (Parker Hannifin) and I should contact them. In my opinion if you name is on the bottle you should now stuff about it, or redirect the request accordingly, not to football people. According to Spicer Report on lubricity improvement additives this additive makes a tiny improvement: -33µm for values 350-400µm. Under 10%. Did not see data for cetane improvement. Bought lubricity formula from Opti Lube, will probably switch to them for Performance formula too. But not a bad product per se.
J**D
It works wel
Powerstroke
J**R
Great product
Great product
J**.
The best diesel additive Ive used
I’ve used this product for years and I love it! This was a good value way to purchase and shipped to me where I was visiting away from home.