This is definitely the best deisel additive I've used for sure. Put it in my boat with twin 660 hp cummins motors and went from 82 gallons per hr to 67 gal per hr at wide open throttle. Was amazed at the difference in fuel economy according to the smart craft on the boat that tells you the fuel burn.
Verified purchase: Yes | Condition: New
Some folks in the south are wondering why their diesels won't run this morning - well below freezing and the filter plug-point for summer grade #2 is 20 degrees. Have never had an issue with gelling/waxing fuel with the Winter Performance Formula over the past decade - even at -40 in Montana. Virtually all manufacturers approve the Stanadyne products - and the other attributes - cetane boost, increased lubricity, and fuel stabilizer/water demulsifiers - seem to help, as well.
Verified purchase: Yes | Condition: New
Keeps my old diesel from huff and puff...keeps injectors clean and lubes pump. Can tell the difference in this additive when used correctly. Protect your engine with this product...both my trucks, RV, lawn mower and my tractor. Great supplier.
Verified purchase: Yes | Condition: New
Been using this and the summer blend version for 20 years. Works as it states and I haven't had any injector issues during this time period. Can't say anything about the milage claims but towing I get between 10-11 mpg,, running solo 13-14 city and up to 17 mpg.freeway, engine 7.3l..
Verified purchase: Yes | Condition: New
As far as I know all of the above is right. This the one recommended by the shop that rebuilt my injecter pump. The owner said he has run it in his car and truck for years and has never had a problem with his pumps.
Verified purchase: Yes | Condition: New
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Fuel Additives & Treatments
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Save on Fuel Additives & Treatments