What should the Engine oil Temp be in relation to the engine water atemp ?

my oil temp is running around 12 *F higher than water temp. Am i begining to have a problem? water temp 192 oil temp 204

thanks in advance Ron

 

Ect starts at 190 for operating temp. eot is supposed to be no more than 15 degrees above that for a properly functioning oil cooler. What are your temps on an overnight cold soak? should be no more than 1-3 degrees apart. If not it could be a sensor on the way out. the sensors are the same so if you suspect one you can swap them and see what the temps are then. Are you towing? what is the ambient temp? is your fan working properly?

 

thanks daddykitty for your responce. I was not towing anything, the temp outside was around 70 F, I think the fan was working. I have noticed the morning that the oil and water temps are about the same maybe 1* difference

 

you have any coolant leaks? is the level constant in the degas bottle when cold?

 

FYI: The tolerance is 3 degrees difference.

And when are these temps being taken? A steady 45 mph? Steady 75 mph? Towing up a hill @ 55? WOT 1/4 at a time?

Josh

 

fixed what are temps at 65 mph on flat ground, not towing for appx 15-20 mins

 

Thanks for all your help. After the truck sat all night I checked the temps, EOT is 141 and the ECT is 150.

 

Those temps don't tell you anything. Fluids cool at different rates, the engine didn't sit long enough. You want to check the trans fluid temp, oil, and coolant after sitting compared to ambient temp. Monday morning going to work afrer sitting all weekend is a great time.

 

Hers how Ford says to check it. Road test starts at step #5.

EOT/ECT check
TSB 09-8-3
https://www.ford-trucks.com/forums/a...3&d=1318287140

 

Just curious, have you done the WOT throttle test and noted the temps?

Josh

 

^^^^^ What he said. In mild weather it took mine almost 24hrs to get temps close. The 12 hour cold soak thing was way off.

To the OP: I'm gonna' go on a limb and say I think you are partially plugged.

I can cruise around and have deltas in the 3-7 deg range, but when I do something similar to what Josh is asking, which is take the truck, fully warmed up and stand on it up a decent grade (empty), I can spike the delta -- usually after I back out of it -- I've seen up to 17 deg. So I'm doing a new oil cooler and bullet proofed EGR cooler and a host of other things.

When I add the camper, the wind resistance of it and hitch up the 3 horse trailer, I can pretty much extrapolate what's gonna' happen, and I do not want to ruin a camp trip just to prove my theory...

 

I personally think the WOT test in the TSB is extremely vague and bogus.

A steady cruise of 65 for several minutes and noting the temp difference and observing how quickly the oil cools after coming down to lower speeds or even stopped tells much more, not a 10 second blast.

Josh

 

It is pretty vague, but I've watched boost to make sure it hits in the 26+ range and I know that when we hit some of the longer climbs fully loaded, it's gonna' be staying in a lower gear at high RPM for minutes on end.... I'm just guessing that the TSB "test" has under load (or it uses loaded can't remember) for a reason and the only thing I could try to replicate that was going up hills. But maybe they mean bring in your truck and all you carry in/with it

I don't know really, other than I've become paranoid at this point

The thing I convinced myself needs to be changed out was the STC fitting. Once I decided that I was on the slippery slope of: what else to do once you are in that far. I'm paying for someone to do it, otherwise I might just do the one thing and wait for others to start happening (dummy plugs leaks, etc.). I wish I had Torque or an SGII last year so I'd have fully loaded data to tell me what I really should (need to) do.

 

The dealer isn't going to hook up a trailer or load the bed up. What if their aren't any long hills near the dealer?

I'm curious what the techs would do near me. 2 of the 3 Ford dealers near me aren't convienetly close to any hills or highways... So WOT to 45 mph is the test?

Don't know... Too vague

Josh

 

Dan, if it helps you feel better, my delta would reach 15-18 on flat Florida interstates going 70 mph with the a/c on not! towing.

So towing up a hill delta goes UP no surprise there.
I now have bpd complete system and don't worry about deltas or what oil filter/cap i have since my oil filter is remotely mounted.