At work with the semi trucks that have oil temp gauges they will sit about 225-250*F on a good long pull. The biggest difference though is they have water-style oil coolers and they have 9 to 11 gallons of oil to use. So I would say that those temps are a little high but not outragous.

 

The part that concerns me is this was very easy driving in cool weather...

 

The temps I got off my truck were just From idling. So I'm sure driving it would net higher reading.

 

oo cool! i used to race late models, dirt then asphalt, for a while with bill elliott out of his shop in dawsonville... so i was just wondering

 

Bill Reid has had an oil temp gauge for years IIRC, I would pm and send him a link to this thread. Or hop on tech...

 

I was just thinking about this the other day when I was sitting in my truck letting the turbo cool down before I turned the engine off. Atomic, were you running a synthetic oil or will the oil type even impact the temps much? On a side note, has anyone used a heat gun to test how long it takes a turbo to cool down after some long pulls?

 

Using dino oil for the break in, but I don't think it would make any difference

 

I usually get 200-220 oil temps after lots of easy city driving in the summer. In the Winter it takes longer to get there... but still evens out at about those temps. I've seen temps in the 230-250 range after a few WOT romps. I always use synthetic oil... so I don't worry too much

 

Just checked it again after a 40 mile trip. Oil filter is 187* and block is 216*.

 

I'm nervous if I don't run an oil cooler on any turbo/sc vehicle I build. I repair/maintain/service turbo
diesel commercial vehicles and equipment. So I guess i see it as an integral part of the operating system now. Those coolers really extend the life of the equipment. No different in gasoline engines.
I'm the one who has to fix the machines when they go down, so I welcome anything that makes my job easier