fuel additives

[NH TC25D]

I'm really surprised with you living in Wisconsin that you do not routinely mix #1 (kerosene) in with your #2 (normal diesel fuel) when it will be below 12 degrees F or so. That is the overwhelming common practice in northern states. A relevant note is that in some places you can depend on your fuel source treating the fuel in cold months. I would never depend on that myself unless I knew with absolute certainty it was being treated reliably and consistently. That's not easy to do.

Service stations eventually switch over to a winter blend. Years ago they just went from #2 to #1. Back then the advice I got from a friend who drove long haul and the dealer was to use Power Service. The mix that boosts cetane and reduces the chance of jelling. I also have been using a better quality filter specifically designed to not only filter out particulates but also water. So far, over 24 years have never have had any fuel related issues. Fuel filter replacement schedule hours were more than doubled and when I look at the bowl and filter I think maybe even longer use. But then.... I smarten up a bit.

 

[tjstractors]

all my fillups are with a

AF3CB Fuel Filter,Black​

https://www.amazon.com/Mr-Funnel-AF3CB-Fuel-Filter/dp/B000SOIRCG?th=1​

I use this same filter when filling up and change the tractor inline filters in about 1/2 the recommended time. Had issues once with contamination and the work required to clean it up is worth avoiding.

 

[NH TC25D]

I use this same filter when filling up and change the tractor inline filters in about 1/2 the recommended time. Had issues once with contamination and the work required to clean it up is worth avoiding.

Looks similar to the filter I've been using since day one of owning the NH. Will continue to use with the SCUT.

 

[mark in portugal]

The engine is designed to run an a grade of fuel that is the same as is sold as fuel; so unless you have some particular need (low temperature for instance) I don't see the point in throwing more money into the tank.

My cars are 25 and 27 years old, my tractor is 40 years old, and they just keep on going without additives or synthetic oil.
Every diesel engine has a water separator and filter adequate for it's injection system.

In my opinion, fuel additives and synthetic oil are placebo engineering.