Noticed the other day that the engine fan on my 2013 6.2powered F250 runs all the time. It's like it has two speeds- really fast where you can hear it running with the hood closed and a slightly slower speed where it still turns fast enough that you can't make out the individual blades. Is this normal with outside temps in the single digits.

ETA. it does this with the heater off also.I've noticed since it's cooled down this winter that when I slow down to drive through town or hit a stop sign my coolant temp needle drops a bit. Thought maybe the fan running is overcooling the engine or maybe it's always done that and I've just never noticed it before.

 

its a clutch fan... not electric..

so it has variable speed based on the clutch heat sensor..

 

Thanks, for some reason I thought most of the newer trucks had an electric fan