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That's the conclusion I came to as well.
I see oil coolers on street applications where the temps are actually too low (in the 170-180 range). Oil needs to be 200-220 to be effective. It is what the weights are rated at. Too cool=too thick, too hot =too thin.
IMO the goal is to have oil temps at 200-220. A little hotter occasionally is just fine.
Constant driving with oil temps too cool is worse than the oil getting a bit hot every once i a while IMO.
Conclusion is most cars can do fine without an oil cooler, but if you drive hard, or track, and cause oil temps to go high fairly often, then an oil cooler can help.
I plan to instal my oi cooler, and for street driving I'll cover the cooler to keep the temps up above 200, and uncover when tracking or hard driving, and time temps go over 230-240.
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