What temp idle to prevent gelling?

If it's single digits you should idle.

 

Depends on how the fuel lines are routed. When in doubt, dump a half gallon of additive in each tank.

 

My company doesn't allow additives and they require us to idle at or below 15°F.

 

i guess you just answered your own question.

last i checked, single digits was lower then 15 which is a double digit

 

Man I am glad I can idle with anything below 62 degrees.

 

Its supposed to be based on so many factors, how much fuel you have in your tanks, the outside temp w/wind chill and if your fuel is winterized or not.

Since your in Lamar, CO, you either got Texas crap for fuel, or maybe CO fuel that may have been winterized.

If you are in doubt, Idle !

Don't take the chance of your fuel gelling and you being stuck somewhere needing help.

 

windchill has no effect on gelling just actual temp

 

We have Tripac APU's in our trucks and we are required to idle below 10 degrees and above 93 degrees. The owner knows the trucks will gel up otherwise and in the summer at temps over 90 all he Tripac does is make noise.

 

Does today's ULSD fuel even bother to gel above 0F? When's the last time anyone had their filter plug up due to cold temps?