Although my guage is usually pretty fixed at about half, in some steep extended mountain driving (outside temps in the 90s) this weekend it rose into the 2/3 to 3/4 area. It did it again on another day when the outside temp was 110 and there were some extended but not tremendously steep upward grades on the highway. There were no signs of over heating and no messages from the info center so I assume it was within normal. Seeing as there is no red zone its hard to tell whats up. Anyone else had it raise above the normal half way point during "heavy use"? Even though I have the tow package (and wasn't towing, but was full with family stuff) I'm having a hard time believeing this thing could tow much of anything in hot weather.