FWIW: Edit: I put a 160 thermostat in Tuesday (07-19-11) night. Yesterday (07-20-11) with a 160 standard flow thermostat, outside/ambient temps in the mid 90's (F) and cruising on the Ohio Turnpike at 70 mph it definately ran cooler than last Sunday (07-17-11). Sunday (07-17-11) with similar conditions (driving at 70 mph on I90) but a little cooler outside the temp gauge needle was right on the next to the last line (higher engine running temp) and the car puked coolant two minutes after I shut the engine off at a local cruise . just FYI and I have no clue on a 160 versus a 180 thermostat????
