Originally Posted by ralphday
First post here.
My experience with diesel additives is, unfortunately, somewhat extensive. My first winter off grid with a diesel generator taught me a lot. Diesel has a cloud point where it waxes. Wax plugs filter, you no run. Never happened on my diesel tractor, but a different type of filter saved me? Don't know.
Drove school bus for too many years. Sometimes the fuel in the home bulk tank was delivered before the blend change from the refinery, so you'd get summer/fall fuel for use at sub zero temperatures. Imagine you in your RV, just idle engine speed possible, so no heat or movement...then add in no insulation, lots of windows, and 50 little people starting to freeze! lousy scenario.
I started treating the fuel (not compensated by the bus fleet owner), just so I wouldn't freeze by butt for an hour waiting for another unit to pick up my students and self. Wouldn't be without additive for cheap insurance. No further waxing/gelling incidents after I started using additives. I might spend $50 for enough additive for 2 years worth of fuel (tractor and generator, no more buses).
I have always added a diesel fuel treatment, always will and have never had any problems with gelling. Will continue to do so as their are/have been times when fuel distributors hadn't yet added the supplement for cold weather or they had but it was an insufficient amount. For those who don't use a supplement or have never had a problem, great, your money, your choice.