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Old 06-19-2016, 03:11 PM   #1
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6.7L Ford Engine High Oil Temps?

Hi,
My '15 F350 is hitting 246 degrees on mountain passes. I'm not used to seeing such high oil temps especially since I'm not pushing the engine too hard-max 3/4 throttle when cruising.

I'm used to seeing temps between 215 and 220 on all of my other vehicles. The oil I'm using can handle the temps but I still don't like seeing it hit in the 240s.

Has anyone installed an aftermarket oil cooler and if so how and where?

Thanks!

TD
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Old 06-21-2016, 08:54 AM   #2
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With temperatures that high, I would be worried that the factory oil cooler is on it's way out. Some type of debris or sand left over from the block casting will clog the factory Powerstroke oil coolers.
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Old 06-21-2016, 09:25 AM   #3
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ScanGauge

Get yourself one and monitor the delta (temp difference) between oil and coolant temps when cruising @ 60 mph straight and level. A great source of info is on the Ford Truck Enthusiast website. Scroll down to their Diesel engine section and do a search. Good luck.
EDIT: I did a lil' leg work for you if interested....
http://www.ford-trucks.com/forums/12...ngine-oil.html
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Old 06-21-2016, 12:32 PM   #4
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I happened to notice mine a little higher than normal this past weekend and had the wife take a picture of it for me.
This was after coming up a steady climb for about 4 miles towing about 15,000lbs

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Old 06-21-2016, 01:25 PM   #5
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I would also check the radiator cap. My 6.0 is supposed to operate with 16 psi through the radiator. If the cap leaks,you loose pressure and your temps will shoot up
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Old 06-21-2016, 03:45 PM   #6
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Don't forget, oil is a major component of engine cooling on a diesel. Oil being sprayed on the underside of the piston is removing heat from them and naturally raising oil temps, especially on a hard pull when you are generating even more heat in there. If your EGT's are running 1000 plus degrees, you can imagine how hot those piston tops are.
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Old 06-22-2016, 06:01 AM   #7
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That is normal on the 6.7 power stroke my parents 11 450 does the same thing we talked to Ford specially if it's very hot. No worries on that. Just make sure you don't see over 260 and you will be fine. It freaked me out big time when i saw that the first time I borrowed there truck to pull my camper. That was also from someone who helped design the engine told me it's okay also.
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Old 06-22-2016, 06:24 AM   #8
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I know this is probably a stupid question but,,, are you do for an oil change ???
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Old 06-22-2016, 06:41 AM   #9
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No, oil had less then 50 miles on it. It was the trucks first oil change and I put in 12 qts of 5w40 and 1 qt of 15w40. All synthetic. Guess they all run hot.
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Old 06-22-2016, 06:47 AM   #10
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Quote:
Originally Posted by TonyD View Post
No, oil had less then 50 miles on it. It was the trucks first oil change and I put in 12 qts of 5w40 and 1 qt of 15w40. All synthetic. Guess they all run hot.

I know nothing about your particular engine, but why would you mix weights...on most engines that is not recommended
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