My simple question is, is it any good? I spend 85% of my time in the south of France, where temperatures are somewhat more generous than the UK, and as a result my search criteria for a 964 has to date included ac. However, I have begun to wonder, given the relatively few examples which have this option, whether it is worthwhile and effective in a late 80's or early 90's car. Any views and experiences greatly appreciated. Thanks.