Quote:
Originally Posted by FymTom
Hmm, I wouldn’t think the thermostat was closed, since the coolant was pretty flat line at 190F. If anything at all, it would’ve ever so partially closed, since they gradually open/close. I wasn’t completely stopped at idle for more than 15-30 seconds. I was probably moving extremely slow stuck in bumper to bumper/1st gear stop and go traffic when the the oil temperature dipped like that. My thought on it was that since I wasnt putting much load/rpm into the engine in that particular spot that heat from the oil naturally transferred into the cooling system (hot moving to cold) as it should. Once the heat transferred into the coolant system it was cooled via the radiator/airflow.
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If the thermostat is closed, the coolant is not circulating through the radiator. and the radiator exchanges the heat in oil mostly with air not coolant. As I see now, this dual radiator is a hybrid oil cooler. It is mainly air-to-liquid when the coolant thermostat is closed. Both air-to-liquid and liquid-to-liquid when thermostat is open. Do you think a race thermostat with a lower temperature limit can increase the effectiveness and maybe improve the regulation of oil temperature?
Edit: maybe adding a thermostat for oil line with a temperature limit close to 210F would be good. We don't want oil temperature to go below 200F.