I personally think that if you are going to install an oil cooler you should include an oil thermostat.
This will insure that you don't OVER COOL the oil on the street.
With a big system and an oil cooler that is an issue. Oil temps should run about 20 degrees hotter then the actual water temps. If not you are over cooled and probably will experience abnormal wear.
Using full synthetic oil will help somewhat.
I installed this one made by Mocal. It is available with -8, -10, or -12 AN nipples built in.
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