Engine Oil Temp. while towing??
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Senior User
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Engine Oil Temp. while towing??
Finally got a Scan Gauge and i noticed my EOT is around 220 all day. I do tow a 5000lb trailer alll day all week and have never got truck up to temp with an empty load to see what the EOT is, but the coolant temp. stays around 190 all day. Just curious if thats normal operating temp. while towing. Thanks for any reply.
Senior User
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I thouthe the 15* was suppose to be unloaded, he is talking about with 5k behind the truck. Mine normally doesn't go above 210 while towing, but its flat here in ga.
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Senior User
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Thats exactly what i mean. I know EOT and ECT should be within 15* of each other, but what about towing a full load? When i think of it, all i do with my truck is haul my trailer in tow/haul mode 9-5 averaging 50m a day (i give it the weekend off).No real time to drive around and get up to temp. just to see what temps are. So again just curious what everybody elses EOT temp is while towing.
Lead Driver
Joined: Feb 2011
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From: L.A. (Lower Alabama)
Different trucks may act differently but just before I changed out my coolers I was seeing 15-17 spread when checking by the TSB (wide open throttle). Towing our 9k lb 5th wheel EOT would sometimes get up to 235-240 (higher than that a couple of times) at which point I would drop down a gear and ease up on the throttle and it would cool down quickly. I haven't towed since changing the coolers but I got a 2 1/2 hour trip coming up in a couple of weeks 
. Finially some down time!
I suspect you are ok for now but there's no way to say for sure without taking it out for a test ride and reading the numbers.
. Finially some down time!I suspect you are ok for now but there's no way to say for sure without taking it out for a test ride and reading the numbers.
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Freshman User
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I recently put in a new cooler, and now run in the 11-14 higher range towing. Towing a big enough load to put me at 8 MPG. The temps used to hit 35-40 higher, same load.
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From: South Weber, Utah
While towing my bumper pull that weighs in at 6500 my EOT stayed around 200 on the flats and on long steep grades climbed to 235 and came down after cresting the hill, I dont know if that is too hot but it made sense that the oil would heat up when you put that kind of load on the engine. The ECT at that time was around 210.
Posting Guru
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Mine stays within the 15 degree spread, usually around 9 or 10, unless I am cresting a long hill. Then the oil temp stays up while the coolant temp drops rapidly, but the oil temp follows in a couple of minutes. I think the highest oil temp I have ever seen is around 220. This is towing 7K - 8K in a quite tall box trailer on a 90 to 100 degree day.
Brian
Brian
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I would say that if your cold soak temps. are near identical in the morning that you have a plugged oil cooler. It's true that the ideal way to check ECT/EOT deltas is with no load but even loaded my oil temps. are only approx. 2-3 deg. hotter than they are given the same speed/conditions unloaded. I would say that if you have a 30 deg. spread towing 5,000 lbs. on a flat road that you will surely be out of spec. unloaded as well. The fact that your oil temp. is 220 deg. is not a problem at all,but it's the fact that your spread is so wide that concerns me. Whenever I see an oil temp. of 220 my coolant temps. are around 205-210. I have to be pulling pretty hard to get up to these temps. (on a fairly flat road,not pulling hills of course,that changes everything).
Logistics Pro
Joined: Feb 2004
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From: The Land Of Time
With a 30* spread and only towing a 5k trailer, which is realativly light I would say, thats a huge spread. For example, my 5er weighs about 13k plus or minus and going down the highway running between 58-63 mph inh 100* heat with the A/C on max and pulling a grade I would only see about a 8* difference in temp.
As stated, 220* isnt a bad thing but it is if there is a difference of 30*.
Try it unloaded and Im willing to bet that you are out of specs.
Sarge
As stated, 220* isnt a bad thing but it is if there is a difference of 30*.
Try it unloaded and Im willing to bet that you are out of specs.
Sarge
I'm hitting easy street
Joined: Nov 2009
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From: Central Oregon
Here is a link to my track log of ECT, EOT and fan speeds while towing 8000#+ in the city, warm day.
Just scroll through to give you an idea of temps while towing.
https://www.ford-trucks.com/forums/1...l#post12297474
Just scroll through to give you an idea of temps while towing.
https://www.ford-trucks.com/forums/1...l#post12297474
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