Engine additives which one do you recommend?

I don't know if it works.
I haven't tried many. I use Fuel winter treatment a couple times a season
I think if the stuff works as advertised, why wouldn't the majors put it in at refinery.

 

Are you asking about ‘fuel additives’, ‘motor oil’ additives, transmission, differential, power steering?

 

Snake oil

 

The anti gel for diesel works in cold weather.

Pittsburgh Power sell diesel additive that claims to help clean the soot out of the new emissions engines and keeps the emission system clean and working. They don’t sell it in truck stops it’s not cheap but if it keeps truck going vs replacing sensors. Some say it work some say not.

 

anti gel has it's purpose.
injector cleaners have their purpose.

Nothing is indicated for everyone, all the time.

 

1 cup of Kerosene per 200 gallons works just as well and is cheaper...

Buy #1 diesel in the winter, #2 will CPPP at 0 F.