[madmaxx]

Cylinder wear is 5 times greater at 160f as compared to 180f, go to performance unlimited web page and view the graph. The cylinders are cold, the pistons are hot, and bingo excessive wear. The optimium temp for combustion is 212f, look at your everyday car. Thermostats close about 10 degrees below their opening temp, so 185 thermostat is fully closed at 175, this becomes an issue in the winter when you are trying to get the engine warmed. shoot a 160 f would fully close at 150f, get ready for an engine rebuild every 6K miles.