Here's a little info on oil cooling. It pertains to a Ford 2.3L but is some is somewhat universal. It is from this website:
http://www.esslingeracing.com/catalog/tech-section.pdf"The oil pressure we recommend for most racing engines is 50 to 70 pounds hot at racing speed.
@7000 RPM
Maximum Oil Pressure 70 psi - Engine at racing temperature, throttle wide open.
Minimum Oil Pressure 50 psi - Engine at racing temperature, throttle wide open
Excess oil pressure does three things:
1. It wastes power.
2. It raises the temperature of the oil.
3. It puts extra strain on the oil pump drive components.
Oil Temperature
180-190 Good
250-260 Danger
285-300 Big Problems - Oil breaks down very quickly and soon will become vapor.
We don't like to see the oil temperature exceed 250 degrees and prefer to have the oil temperature stabilize
around 220 degrees. An oil temperature gauge is a very good investment because it will show if you need to do something extra to cool your oil or keep it at a reasonable temperature. Also if the oil temperature raises or jumps up more
quickly than normal, it can indicate eminent bearing failure. Another thing to consider is that you don't want to run the oil
too cold - under 150 degrees. The oil doesn't lubricate very well and foams very quickly. To minimize oil related failures
it's important to warm the oil before running the car at high RPM and high horsepower levels."