>
>
> Weird observation;
>
> Tried to get in line with the big trucks on I-95, one in particular was
> rolling at the speed I wanted.  I noticed while following this truck for
> awhile my temp gauge began to climb although my speed was actually slower
> than what I had been driving.  Was I fighting turbulence or is there
> something to do with low pressure pockets not cooling as well as high
> pressure air?  I was able to reproduce this over and over.
>
>     Heating-up was likely caused by reduced airflow over your radiatior
because the apparent wind was reduced dramatically by the truck's draft.
Vehicle movement through the air is a main factor in the process of
exchanging heat through the radiator.  You may want to check your cooling
system.  I would expect, with proper function and the theromstat , the
operating temperature should stabalize very near 'normal'

   Don Hanson