Zach is wrong about using a hotter thermostat. No point in having the water staying in the radiator getting cooler if it isn't flowing through the engine anyway. The idea of different temperatures is to control when the thermostat opens to start the heat transfer, due to differing transfer rates with external temperature.
1991 MX6 Turbo 4WS back on the road again after 5 years.
1990 4WD Capella Wagon2.0 FE3 now tin cans.
1988 4WD Capella Hatch 2.0 FE3 DD