im new to the site so can i start by saying hello
i drive a 1998 astra G 1.8 sport but am having a litle problem. i am having to fill the coolant up once a week but havent a clue where its going.its been doing it for about 3 month now but starting to get annoying/worrying.
ive tried a few things to try and sort it which include new thermostat,new coolant filler cap,giving system a flush then adding rad-weld(just in case) and most recently had head gasket checked at the weekend but all is fine.
i dont think its heater matrix as not noticed any coolant on carpits and there are no leaks at all what ive noticed around front of car.also the coolant is flowing back into filler tank while cars running like it should.
so im totally stuck at what to do next.anyone have any ideas at all. thanks