Cool Down Time
Posting Guru
Joined: Feb 2018
Posts: 1,555
Likes: 516
There is no factory recommendation. Why do you let it cool? I understand the theories being applied to past behaviors but as with just about everything from waxing to changing oil, there are some assumptions that don't precisely fit reality.
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
My 6.0 I had a pyro, would wait until below 400 f. It rarely took more than a minute after stopping even if pulling and uphill right before a fuel stop, by the time I pulled in, fan shuts down, EGT is below 400 from less than a minute idle time. I would not worry about it, as long as your fan is not screaming on high and coolant temps are coming down, transmission temps are reasonable I would say your EGTs are fine. Even if towing heavy, as long as everything is working right, really don’t think you have much to worry about. If all these temps are still concerning high, a few minutes of idle will bring everything back down fairly quickly.
Lead Driver
Joined: Sep 2006
Posts: 5,663
Likes: 162
From: Cartersville, Ga
Towing heavy, I use the remote start with the duration set to 5 mins. Get out of the truck shutoff, then remote start really quick and it shuts off after 5 mins. Usually brings the oil temps down close to/under 200°.
Hotshot
Joined: Jul 2013
Posts: 14,211
Likes: 2,170
When ever I watch my temp for cool down time the temp always goes up...probally becuase a vehicle not moving is not really cooling system efficient.
Trending Topics
Senior User
Joined: Feb 2019
Posts: 397
Likes: 6
From: SW Louisiana
SWITCHING OFF THE ENGINE - 6.7L DIESEL
Switch the ignition off.
To help prolong engine life, we recommended you allow the engine to idle for three to five minutes, especially after any of the following:
- Continuous engine speed.
- High ambient temperature.
- High GVW or GCW operation, for example heavy loads or trailers.
http://www.fordservicecontent.com/Fo...userMarket=USA
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Laughing Gas
Joined: Oct 2017
Posts: 787
Likes: 72
From: Lansing MI
Like the poster above, I also use a CTS2, and monitor EGT1 (at the turbo). I generally let it come down to 400 before shutting off, but when empty, that amounts to park and shut it off. Coming off the interstate, after hours of running 70, a coasting down typical off ramp, is enough to drop to the low 400, then a block or two to a fuel station gets me down to nearly that 400 mark.
When towing the travel trailer, I find that by the time I have it backed into a site, or parked at home, temps are good to go.
As was said above, the biggest concern is when you reach your destination with an active regen in process. For these, I do as that mentioned. Put it in park (this will cancel the regen), then let it idle until the EGT1 comes back down.
When towing the travel trailer, I find that by the time I have it backed into a site, or parked at home, temps are good to go.
As was said above, the biggest concern is when you reach your destination with an active regen in process. For these, I do as that mentioned. Put it in park (this will cancel the regen), then let it idle until the EGT1 comes back down.