ironrat
Well-known member
Not exactly! Oil temps can and do change regardless of water temps. They can go sky high when a problem occurs and the water temp may not change at all. An engine without an oil cooler/heater has essentially no contact with any water cooled surfaces in an engine, most all oil coolers are cooled by air across the fins of a heat echanger.The of the heat of the oil is generated from friction and leaking combustion (hot) into the crankcase. It's main cooling of the oil is from air flow across the oil pan.