Same here in the Sun Belt (Georgia). We have different formulations in our gas during spring/summer vs. fall/winter here in LA East because of our smog problem. Maybe in AZ, NV or HI you can find "summer gas" all year round.Nope, not here in Mn/Wi. The gas stations get this all from the manufacturer.
The factory thermostat is rated for 167F (75C). Some here have replaced it with a Motorad at 180F (82C). My Scanguage reads around 180F with the OEM thermostat. (Still confused by that. Wish I had read the spec stamped on the new thermostat.)***snip*** Replaced termostat, old was working at 165-175 F should be 190 F. Lets see how it works?. ***snip***