[Overdrive]

I've found that if I can get into clean (read: open) air with no traffic in front of me at highway speeds, the needle usually sits just to the right of the line mark for 180°, even when it's over 90° outside. Since this rarely happens though unless it's the middle of the night and no one is out, I'm usually looking at the needle resting between the 8 and the 0, and sometimes bisecting the 0 when things start to get slow-moving or when I've spent a lot of time behind cars, effectively blocking off a lot of the air the radiators and right intake could be getting. This of course happens more quickly in hotter weather.

Hm...maybe this weekend calls for a little bumper removal and radiator cleaning.