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Old 04-14-2016, 06:24 PM   #1
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Ford 6.7 Diesel oil temp question when towing heavy.

I have had two trucks with the new 6.7 diesel, but the current truck is the only one I've towed fairly heavy with. The 2011 model would only rarely get over 200 degrees F, but the new one will easily hit 208 while towing. I've only owned it since last November so haven't towed during hotter times of year. I was just wondering what others were seeing.

I did check one of the Ford Superduty forums, and several guys posted that they were seeing temperatures of 248 F. when towing on steep grades.
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Old 04-14-2016, 10:16 PM   #2
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Didn't know they had steep hills in Louisiana. Give me a month and I'll let you know how hot my oil gets when I run the Gauntlet.
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Old 04-14-2016, 10:20 PM   #3
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Have 2014 F350 and pull a CC36CLTS Temp has ranged from 195 to 240 on really hot pull days on hills.
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Old 04-15-2016, 12:34 AM   #4
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From doing some research, it appears that folks are seeing up to 240 deg F when towing heavy on hills.

Shell Rotella T is good to 302 deg F.

Anybody put an aftermarket additional oil cooler on their superduties? I would feel more comfortable with cooler oil temps regardless of what the new higher normal is for the 6.7L engine.
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Old 04-15-2016, 01:08 AM   #5
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http://www.dirtydiesels.com/mpd-6-7l...elocation-kit/

Anything like this would work.




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Old 04-15-2016, 08:13 AM   #6
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Quote:
Originally Posted by TonyD View Post
Didn't know they had steep hills in Louisiana. Give me a month and I'll let you know how hot my oil gets when I run the Gauntlet.
Yep, we have steep hills in Louisiana...not many, but a few.
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Old 04-15-2016, 07:25 PM   #7
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Quote:
Originally Posted by Davidg View Post
I have had two trucks with the new 6.7 diesel, but the current truck is the only one I've towed fairly heavy with. The 2011 model would only rarely get over 200 degrees F, but the new one will easily hit 208 while towing. I've only owned it since last November so haven't towed during hotter times of year. I was just wondering what others were seeing.

I did check one of the Ford Superduty forums, and several guys posted that they were seeing temperatures of 248 F. when towing on steep grades.
I have a 2012 F250 with 6.7 diesel and pull a Columbus 320RS that weighs 13,500 lbs (avg). The engine temperature varies from 192 degrees without camper to 205-208 degrees with camper. The hottest temp was when I was bucking a 40 MPH headwind for several hours. I use Ford's 5w-40 full synthetic for diesel which is recommended when pulling a heavy load.
I noticed there are several service bulletins in safercar.gov related to engine cooling issues that apply to certain 2011-2015 6.7 Super Duty models. It might be worthwhile for anyone experiencing higher engine temperatures to check with their Ford dealer to see if any of these service bulletins apply to their vehicle. Best Regards!
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