My car (Astra G 1.8 16v) takes a fair while to get up to operating temperature, particularly if the outside temp is less than 10 degrees. On my 15 mile drive to work (local roads and 5 miles of dual carriagway) it barely gets above the 80 mark. If I turn the heater knob to hot the temperature can almost drop back to 0.
Should the guage be on the central line (90 degrees)?
Any advice on changing the thermostat, shortcuts etc? How easy is it to bleed the cooling system? Heater on hot and leave the expansion cap off for a while?
Any ideas how much they are?