StanadyneDIESEL PERFORMANCE FORMULA - 16 OZ.

I see very slight milage improvement. I use to protect my diesel fluid pump in my F-350. My engine seems to be a little quieter and starts easier in 30 degree weather. There are cheaper places to get it and you can buy in a 1/2 gallon.

Top notch all season, all protection diesel additive! With ULSD now a days and high pressure fuel systems on newer diesel vehicles I run a dose of treatment every tank and can tell the power difference with this additive and increased fuel mileage! Great product! All I will run from here on out!

Tractor starts well, even in cold weather.

Did a lot of research prior to picking a diesel treatment product and these guys were the clear leader in all tests I found out there. Hard to find unfortunately in stores because of the more popular brands that actually preform far worse that this.

I've been using this brand of diesel fuel additive in my John Deere tractor for about 18 years and have never had a fuel issue. Works very well, and quite economical.

I plan on using this product at every fill up. I have to figure out how to get the ratio right. It would be nice if they sold a bottle for 5 gallon mic

I drive a 2014 duramax that is fully deleted including the DEF. And this product has made it seem like the motor runs a lot better, less resistance on injectors and ensures the best MPG possible!

I have used this product for years its everything it claims to be! I have a Volkswagen Jetta Diesel this product is great increase power and fuel millage! I have 340,000 miles on it, never had a problem with carbon up. Highly recommend! Also fast shipping as well !