StanadyneDiesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6

I'm using the Stanadyne Performance for more than 4 years now. I always get my assessment from my dealer mechanical service. They've found so far my engine running great, well maintained and in excellent condition. I got the Stanadyne recommendation from Ford. And I'm happy to have a seven year old car running with great satisfaction.In my country, diesel fuel contains high sulfur dioxide level and often water. Stanadyne Performance takes care of both and makes me feel happy at the same time.

I have used it for 30 years on three different diesel vehicles with no injection system problems. Volkswagen recommends it as THE diesel additive to use. Stanadyne is a manufacturer of diesel injection pumps, which gives them more credibility than a company that produces nothing but additives. This was the best price per ounce I could find.

Fast delivery and great price on a top quality product

I liked that you can order this Stanadyne like this , it’s a much better deal than purchasing it single containers , good price

Items arrived as advertised.

Use this product on my boat when adding diesel fuel. Does a good job and I recommend but I do think the price is a bit high.

I have nearly 200,000 miles on my Silverado 2500 Duramax. I've had zero issues with injectors. I change the fuel filter regularly and put Stanadyne in the tank with every fill. I'm still getting good mileage towing a 12,000 pound trailer. When not towing I get over 20 mpg. In a seven thousand pound 4 WD that's remarkable. I believe Stanadyne has a lot to do with the mileage. I got the tip to use Stanadyne from a couple of professional truckers who swear by the stuff. I'm a believer.

Been using this for years but decided to try to save a little money, and free shipping. Received a case with a manufacture date of May 2021, which according to Stanadyne is basically out of date. Will be purchasing from my original, slightly more expensive supplier from now on."Stanadyne Fuel Additives can be stored for up to 24 months without deteriorating if they are unopened and in a suitable storage environment. Additives will begin to deteriorate when stored longer or improperly."