if there is such a thing??

The tour is running at just under "N" of Normal...
Doesnt seem to want to climb higher, except of course
sitting in bumper-bumper idling traffic (barely climbs - maybe to "o")

Had rad flushed back in June, seems somehow related. It used to run at approx "o" and climb to "r" or "m" in sitting traffic.

Is this a problem?