Quote:
Originally Posted by DR-JEKL
I would have thought the oil temp would still reach operating temp at the same rate from ambient...?
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No. It will take longer to warm up as the oil is pumped through the cooler all the time the engine is running, instead of when the OEM thermostat opens at ~109 degrees. Similar theory for thermostat in the water cooling system. Radiator is only used when water reaches operating temp.