Hello @ all My car is not always clean – with certain things I am absolutely sensitive – e.g. with the liquids and filters. Now Saab has introduced from MJ 2001 the “long life” cooling liquid (orange), which is to keep a “vehicle life” and no longer needs to be changed. I change my cooling liquid (BASF G48) every two years in May and if I look at my collection tank so, then I know “what good” to have done for my car. Freshly swirled up is she “grey” and this is also perfectly normal. My question to you … Who is changing anyway – who adheres to Saab’s promises and who hasn’t thought about it yet?