hi people im a new guy to this form just woundering if any off u could help me i have an audi s3 1999 model and it seems to be loosing coolant after an few hours driving i have checked for leakes and the aa did a leak test and it seemed fine i have had the front end off checked the radiator im woundering if the water pump could be slowly leaking i have ran the car with the coolant top off for a while to get it up to temprature and the heaters were alot warmer than before it started from the coolant light coming on the dash i thought it could be the head gasket but there is no water in the oil on the dipstick its confusing feel free to help if u can many thanks adam