engine oil thermostat needed?

[dhutton]

Originally Posted by Vegas69

My opinion is No. The radiator is your oil thermostat. It aides in warming up the oil faster and regulating oil temp as it climbs above the coolant t stat. I ran this setup and it worked fine for me until I got on the road course for 20 minute sessions. Then I went to an air cooled unit which does need a t stat.

But what happens in cold weather when the radiator thermostat rarely opens if at all in some driving conditions such as highway cruising? The radiator is close to ambient temperature and the oil will be much cooler than desired. I think in warm climates it may not be needed but in cooler climates it might be good insurance.

Don