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Your cart is empty.Stanadyne Performance Formula 5 Gallon Pail Treats 2,500 gallons diesel fuel per Pail Note: All Stanadyne Diesel Fuel Additives can be blended with each other and "double-dosing" is not damaging - although it may not provide twice the benefit. Where engine and vehicle OEMs have approved Stanadyne, most of them recommend Performance Formula, which should be used year-round to ensure protection against fuel related problems.
Amanda
Reviewed in the United States on March 5, 2022
I thought this was made to keep the diesel from freezing or gelling up, but on its own it got a big chunk of slushy ice block in the bucket, not sure how any water could have gotten in it so it must have froze up on its ownHad to dump it out not cool probably waisted 3 gallons
Mark Miller
Reviewed in the United States on December 12, 2021
How is this free? With fuel above $3 a gallon it pays for itself with the gain in MPG. That’s right, buy this 5 gallon can, and never run a drop of fuel without it. You test it and you will see I’m right. It saves fuel with higher MPG and fewer DPF regenerations. This is the best stuff on the market.
John P
Reviewed in the United States on June 16, 2019
Best fuel supplement on the market. I always use this after a truck sits for awhile or when purchasing a used truck.
bobbie
Reviewed in the United States on March 16, 2018
Great stuff. Engines last longer. 650000 so far on one 260000 on another
Grandpa and Grandma E
Reviewed in the United States on March 6, 2016
works great
R. Mccorkle
Reviewed in the United States on December 3, 2016
If your diesel vehicle is running rough and putting out lots of smoke try stanadyne it really is the best stuff I've ever found for a diesel additive
Complete Customs
Reviewed in the United States on November 10, 2016
Best Fuel additive for your diesel car or truck. Add this every fuel up for best results and protection. A+ Excellent stuff!
Customer
Reviewed in the United States on December 26, 2013
We use this in all our diesels.It improved our fuel mileage and seem to give a lot better wear and tear on the motor
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