HI Chaps, 1. Anyone know how difficult it is to change a thermostat and whats involved? 2. Anyone use the climate control Trick to see the actual coolant temps http://www.wak-tt.com/climate/climatecodes.htm (Works on the S4 Climate control with the same buttons.) 3. Could someone please tell me what temps their b5-S4 normally runs at and what oil temps. (Code 49C with the above procedure) Why do I ask? I had my thermostat changed and on the way there temps were around 94-98 mark on motorway and normal driving. afterwards temps were 100-105 on the same journey back.... the dash needle was above 90 as well and its was never off 90 before. I have just had these symptoms happen with my TT and a new thermostat , luckily I had the old one , refitted it and all back to normal. Now twice in a row on two different cars........I have a suspicion that the factory thermostat is better than a replacement oem one, maybe replacement thermostats are being incorrectly built with opening temps being higher! :?