Quote:
Originally Posted by ChrisSlicks
On this engine the oil is water cooled. The typical water temp is 200 degrees which means there just isn't enough heat transfer between the two given the only slight difference in temp and limited surface area contact.
With an external cooler you would have a much greater temperature differential, resulting in more heat transfer (depending on cooler surface area of course).
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i disagree. When driving normal in stree, you're right - there is not enough temperature difference. However, as you drive the car hard and the oil temp starts to climb towards 300, that should create enough temp difference for the cooling system to do some good......but it doesnt.