I recently bought my astra G really clean car with only 72000 miles on the clock, however i have realised that the car doesn't like staying at temp, when idling after a drive it will heat up no issues and sit just before the 90 point hoever while driving this used to drop way below both lines on the cold side, I have replaced the thermostat and the CTS incase that was the issue however this is to no avail as now it only sits just inbetween the two cold lines while driving at around 60 - 70 mph, i am aware this is very cold and not very good for the car. I really appreciate any help anyone can give me.
