Im sorry I couldn't find anything regarding the ecoboost engines.
Its starting to get cold 8-10 F and I would like to know if I need to warm up the truck.

 

I've always gone with this approach with my vehicles: I let them idle for 15-20 seconds before taking off if they've been parked over night. I do this to let the fluids get moving and make sure things are properly lubricated before putting additional stress (higher revs) on moving parts.

When it gets cold I try to accelerate slowly until the transmission fluid gets a chance to heat up.


Now that we've hit single digit temps I've been starting my truck and letting it run for 4 -5 minutes before driving off (more for my benefit, having a warmer vehicle).

 

Modern engines are warm enough to drive after a few seconds to drive--the stuff that needs to warm up that can't warm up until you move--transmission, rear ends, wheel bearings...ect makes driving a bit easy when taking off common sense.

 

The only time I let my truck warm up is if there is ice on it, and then maybe for only 5 minutes. Other than that, I'll start it and start driving down the road. I take it easy until the engine comes up to temperature.

 

I always start my truck (via key fob) while I'm getting ready regardless of temps..

 

There's no need to warm a vehicle up; there hasn't been a reason to do this for many years. I do wait until the oil pressure comes up to normal, and I do the same thing as Ryan - accelerate slowly until the transmission temperature has started to come up towards normal.

 

Ditto.


The engine tolerances may be fine in the cold, but the lubricants take a while to warm up. Especially with a turbo, I give it the TLC of the extra few moments.

 

Like to warm my truck up for about 10-15min while parked outside. But then again it is -21c (-6F) with windchill -25c (-13F) the last couple of days.

 

I don't have a garage so I'm forced to wait longer than many people. I have to have enough heat to get the ice and fog off the windshield before moving. The coldest it gets here is about +20 for maybe a week. I'll warm up for about 5 or 6 minutes.

 

Letting your oil reach an optimal operating temperature at idle before putting your engine under stress is ALWAYS a good idea in any motor. It will reduce wear and tear.