I never noticed any drop off.


I think the motor is set to derate around 250F on the oil.

 

Reading these oil temps my 15 350 3:73 DRW 4X4 towing 18K up Baker Grade (Las Vegas) at 100 degree day the engine oil temp easily reached 250 degrees and was not pushing it hard, dropped a couple gears at less than half throttle to cool it off. Thinking about taking it to the dealer to check out.

 

Nothing is wrong, unless your clutch fan didn't engage to high.

If the oil temp was like that then the coolant temp was warm as well.

 

This is part of the reason we don't have real gauges anymore. From what I'm told Ford dealers were dealing with too many complaints when gauges went warmer than people expected, so they started using dummy gauges instead.

Part of the problem is how Ford doesn't publish max temp specs either. Those specs are coded into the PCM. If the truck isn't indicating a problem there's a 99% chance its operating as designed.

 

Towing my Raptor.....18,000 lbs through the rockies.....the cascade mtns....through Alaska.......
I would hit oil temps of 248-250.......the engine fan sounded loud as hell....the truck did just fine........
I use shell T-8 synthetic engine oil.....and am not concerned.
That's my experience......

Fantastic Truck.......

 

Ok, just making sure everything is good

 

My 2012 reached 250 also a few times through our big mountains here referred to as the Coke. But I have to tell you that it cooled down as quickly as it heated up. Something my '05 6.0L "couldn't" do! I'm confident in the cooling system on this 6.7.