6.7 transmission temperature

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Feb 6, 2023 | 05:21 AM

dutch71

Thread Starter

Mountain Pass

Joined: Mar 2021

Posts: 117

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6.7 transmission temperature

Certainly it's already been discussed but I can't seem to find it in the threads.
I'm at my first SD with 6.7 power stroke. From time to time I happen to haul quite a lot of stuff in the bed. Having no experience with this engine I'd like to ask your experience on transmission temperature, driving on flat or high grades for instance, what's a safe temp range to keep the transmission at.
Thanks

Feb 6, 2023 | 05:27 AM

Wyldfire

Mountain Pass

Joined: Sep 2017

Posts: 158

Likes: 30

Quote:

Originally Posted by dutch71

They run hot by design.

Feb 6, 2023 | 05:43 AM

Wyldfire

Mountain Pass

Joined: Sep 2017

Posts: 158

Likes: 30

Ford considers normal operating temp of transmission is 190 to 260. I can see 245 pulling and climbing regularly. Never has caused an issue.

Feb 6, 2023 | 06:34 AM

senix

Super Moderator

Joined: Aug 2008

Posts: 37,379

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From: Frederick, MD

I seem to run around 200-210 unloaded and around 220 on averge pulling. 240 mountains heavy towing.

cooling stragey in mine is pretty agressive and I never see coolant temps over 220 and oil temps at 225 kicks the clutch fan on high.

Feb 6, 2023 | 08:53 AM

RidgwaySD

Cargo Master

Joined: Jul 2021

Posts: 2,969

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From: Ridgway, CO

There is nothing you can do to "control" the temp, it is a function of the vehicle. Being "concerned" about this is wasted energy.

Feb 6, 2023 | 09:16 AM

HRTKD

Hotshot

Joined: Oct 2015

Posts: 19,695

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From: Wyoming

My engine oil temperatures haven't exceeded 245°F and my transmission temperatures haven't exceeded 235°F. I tow an 11K toy hauler over Rocky Mountain passes.

If you're worried about it, slowing down can help a bit. Going too slow can also be a problem. I've seen my temps do some strange things when pulling up the other side of the Ike Gauntlet in stop and go traffic.

Feb 6, 2023 | 11:18 AM

redford

FTE Leadership Emeritus

Joined: Sep 2000

Posts: 23,174

Likes: 1,678

From: Stephensville WI

If your coolant, oil or transmission gets too hot, your truck will tell you. No need to focus on it. Follow the severe duty schedule and relax. Don't take the enjoyment of driving away by worrying about everything. Enjoy your Super Duty.