I run a PainLess 180* on, 165* off. with a 180* thermostat. High quality stuff. nothing in the cooling system goes to work until the motor is up to running temp :toothy7:
I was cruising around town today in 102* weather at 185*. It sometimes goes up to 195* when i get at a cruising rpm. but thats still very manageable. 195* is still in the very safe zone so im not concerned.