> 
> I have the prop shaft out of mine right now. I got an increase of nearly
> 8 MPG hwy. I'll put it back in before winter.

I would suggest to you that there is something very wrong with your AWD drive system
somewhere, if you are noticing that much, let alone ANY fuel mpg difference when the
prop shaft is out. My last VC was quite "soft" (read: unaggressive) and when the shaft
was out, on mostly highway driving on long trips, I'd notice perhaps 1mpg improvement.
 Just my $0.02 ....
bob