Oil Cooler Failure Temp?

**WarChild** · #1 (**permalink**) 03-10-2012, 05:20 AM

At what EOT does one need to worry about oil cooler rupturing. I cant find anything online refering to the actual temp. It just says excessive temps my cause oil cooler rupture. Befor my reverse flush my EOTs were 227* max and would not come down until I got off the hiway. Now they are 207* max and Ihave a 15* delta spread with my ECT being at 190*-192* but i would like to know what temp the oil cooler is known to fail at. I have a EGR delete so thats not an issue.

TheFordman87 · #2 (**permalink**) 03-10-2012, 05:23 AM

Subscribed... I would like to know that answer myself. They told me at the dealership that 220-230 is typically normal for a diesel but I find that to be a tab bit to hot.

Btw what kind of flush did you do to make your eot drop?

Also I can tell you that 207 is not bad at all. Especially if your deltas 15. The eot is typically going to be higher than ect.

**WarChild** · #3 (**permalink**) 03-10-2012, 05:40 AM

THIS is what I did. I know the EOT is usually higher. But according to ford a 15* delta shows the oil cooler to be cloged and should be changed.

**Evil Eye** · #4 (**permalink**) 03-10-2012, 05:45 AM

My buddy and I were towing up a pretty decent grade (well, I had already pulled the hill and he was about an hour behind) and his truck defueled pretty bad. He was with another buddy of mine who had AutoEnginuity and by the time he got AE on there, his EOT was 280*. Thankfully, his oil cooler didn't rupture and he was able to sit by the side of the road for a while allowing the EOT to come down. Then, he crawled the rest of the way to camp watching his EOT on the AE.

**WarChild** · #5 (**permalink**) 03-10-2012, 05:50 AM

Holly crap. I think Ford has the defuel at 250* with the latest computer flashes but dont quote me on that. I was going to replace my oil cooler but I think Im going to try a longer reverse flush and be done with it instead. As long as my temps dont get too much worse that is.

**Evil Eye** · #6 (**permalink**) 03-10-2012, 05:57 AM

Yeah, interestingly enough the defuel value in the PCM is actually programmed in Celsius, so the converted number is 253*F.

**WarChild** · #7 (**permalink**) 03-10-2012, 05:59 AM

Quote:

Originally Posted by Evil Eye

Yeah, interestingly enough the defuel value in the PCM is actually programmed in Celsius, so the converted number is 253*F.

Ahh. I see...lol you werent ever sationed at NS Mayport were you?

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