I agree the oil temps only getting to 170-180 could lead to problems. The biggest question is where is the temp sender????
If you are not getting any cloudy oil, my bet is that the sender is located after the oil has been cooled.
Best way to find out actual max oil temp is a sender in the pan. If thats not possible, shoot an Infrared thermometer at the oil pan after a good run and compare the temp to your gauge.