Shifting these automatics at WOT will put extra wear on the clutches in the tranny, I believe.

A good run on the highway might cause a tight valve to grow and hence a miss that is noticable after pulling off the road. It would have been leaking on the highway too its just a lot harder to notice.

The running 80 thing depends on your local speed limits. I belive some of the western states have that as the speed limit.

In Indiana we have 70 speed limit but you can generally go ten over without danger of a ticket....not on major holidays though.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.