> Hi Bob and Dave, > > Just by curiosity, do you have an 82C or an 87C T-stat? I put an 87C > T-stat in my S6 and the heater control stays at 87-88C on highway, even > today with -21C outside, with 91C max on heavy traffic. 83C seems a bit > low to me for a 87C T-stat. > > > Vincent. Mine's the original thermostat, whatever that is. Bob