The astras now starting much better since charging the battery for 3 days and a service. Got her taxed too so its nice to get her back on the road and in service again. The temperature gague isnt going much beyond the blue mark so i am guessing the thermostat has gone and will need replacing. I will get this from a motor factors tomorrow but could anyone provide some pointers on how to change? I have tried looking for a drain plug on the bottom of rad but with no luck, is it somewhere else? Its a 93 1.7D btw.