I have a cooler installed - did it just for looks... I rarely see
oil temps above 150 degrees, (all my driving is on the street - no track time). From what i've read on this site, that is probably way too cool.
My
oil temp probe is located at the back of the
oil pan which may or may not be the most ideal location to get a good reading.
I will be installing a thermostat or bypass valve in the next few weeks. I've always felt that the cooler is in somewhat of a vunerable position, but have never heard of one getting knocked out by a stone or other debris.
- Dan