Thanks for that. I've never really paid much attention to how the A/C was turning on. I will track it now. Found my gas mileage dropping from 4.4 to 4.7 about half-way through the stretch from Thunder Bay to Sault Ste. Marie. Terrain was much the same, just afternoon temperatures increasing. There are about two weeks out of the year here that A/C is nice, the rest of the time it gets in the way. I wish it was obvious when it was active.