Update:
On my trip yesterday (320 miles) I watched the ScanGauge temp readout, all was fine. It never went over 186 for more than a min (once it did was one steep but short hill I did a 25mph pushed it to 193). Outside temps were between 85F and 68F. Sunny and then some rain (with temp drop). This tells me that blocking the upper grill year round should not be a problem unless I vist death vally.
__________________
|