Join Date: Sep 2006
Car: 2004 Facelift 75 Connoisseur 1.8 turbo with DD Pack. And remember, the troof is out there.
People talk about hgf as if it's inevitable. The primary cause of hgf is overheating due to coolant loss. Loss of coolant is often overlooked/missed because of the poor design of the temperature gauge. This shows 'normal' (the 1/2 way mark) for any temperature between 75 and 115 degrees Centigrade. A minor leak can send this way above 'normal' very quickly and before many people realise the gauge is hitting the red, it's too late. Consider the gauge a worry indicator. Anything higher or lower than 'normal', worry. - and more importantly, act.
As in most things mechanical, prevention is better than cure. The coolant content of the K18 must be one of the smallest known to man (about 6.5 ltres) so even a minor leak has to be taken very seriously. The best advice is to be aware of the weak spots in the cooling system and check the level regularly. Run the diagnostic screen in temperature mode every so often so you can see how things really are going temperature-wise. With due care and attention, the K18 will have a worry-free life.