Q: My 1999 Pontiac Sunfire coupe is doing something something I can't easily explain. The car has 240,000 km on it and it has the stock engine, although I think I bought it with a K filter charger.
My 2007 Audi A5 3.0 TDI Quattro has started running cool. I have owned the car from new and up to last autumn (2013), the temperature gauge used to get up to 90c and stay there, now it registers ...