Cold start vs idling

[Billdozer2]

(12-20-2016 )Mrkentee Wrote:  What would say the cut-off is? About 15 above zero?

I was thinking about asking the same thing earlier this week. For the drivers that don't have an APU or a Webasto coolant heater, at what temp do you draw the line and idle the truck? My cut off is 10 degrees F. If the low is forecasted to be under that, I idle. And I only idle to keep the fuel moving, since I do have a Webasto bunk heater. If I do idle, I turn on the PTO which bumps the RPMs up to 850 and the oil pressure stays above 30psi. I figure it is better than 600 rpms and 20psi or so.

Luckily, where I'm at in New England, I only have to idle the truck overnight a couple of nights a year.