6.7 Cummins Engine Oil Temperature?

Brisk wrote:
What oil temps are you guys seeing while pulling long grades??

Mine runs a bit higher than water/coolant temp.... 195 water means about 205-208 oil temp.

I have noticed that there is a direct relationship between turbo boost and oil temp (which makes sense, but I never thought about it before).....

Under normal circumstances on flat ground i'll pull about 4-8 psi boost and the oil temps will be in the 205-208 I mentioned above..

However, if there's a headwind/sidewind and I'm using 20 psi to maintain highway speed, I'll see oil temps in the 220-235 range. Without a corresponding rise in coolant temp.