When i stop my engine after driving there are bubbles traveling up my water hoses into the header tank causing the water to temporarily rise and bubble. I do top the water up regularly. The previous owner said that regular top ups are to be expected. Is this the case or is that B*ll sh*t. I am worried that it is HG failure.
No mayonaise under oil cap.
Stage 3 saphire cossy.
Factory water hoses and radiator.Fans do come on regularly when the dial gets to the M of norm and cut out when the temp drops as they should do.