Schaeffer Manufacturing Co. 0137ULSW-004S Diesel Treat 2000 Ultra Low Sulfur Winter Premium Diesel Fuel Additive, 1-Gallon Bottle

This past winter when it got to 0* for a few days & we had 2 back to back winter storms, my neighbors tractor wouldn’t start due to gelling. I use this ever tank all 4 seasons and my tractor stated right up to plow driveways after the big winter storms. It definitely works! Also lubricates ulta low sulfer fuel. Don’t believe that your diesel doesn’t need this. After the fact it’s to late & you’ve ruined your $10,000 eng. Just get it & use it every tank @ 1oz per 7 gal & you’re good to go

I have a 855 big cam III cummins and they are collllddd blooded. Now with schafers in her she starts easily in a couple seconds without block heater and ether.All other brands of diesel additive would still require block heater and ether, so needless to say this stuff is the real deal.

Larger container...hard to handle!Product is easy to use...

I am a big fan of Schaefffer products. Trucks seem to run better with the diesel additives and get a small improvement in MPG

A great value due to mix ratio of one gallon product to 1,000 gallons of diesel fuel. Can't beat value with all the benefits of product. However, I currently can only give 4 stars as I am not seeing an increase of power or fuel economy. Still Winter here in Berkshire County MA with near single digit temps over night so probably not the best environment to evaluate a diesel fuel additive. I can say cold start up is excellent, as well as warm up and on road performance. All of which were great with previously used Opti-Lube XPD.

I got this . for my Oil heater. This is a good product. Cleand my furnace. An the fule filter. It was avertized to do so . It treates 1,000 gallons.

My husband had me buy this. He said in the jug at -5° F it was gelled up already so he didn't put it in his truck. He said it shouldn't be sold as an antigel product if it's going to gel up that easily.

Great product