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@UltArc: I assume you mean sidewall pressure? Yes, I'm actually a little bit overinflated. . I've heard that reduces rolling resistance. But certainly not enough to have a 5 mph differential at the bottom of a short hill? btw: great FE on that Mustang. Seriously, fast AND fuel efficient!
@night9: This seems to me that when our older cars (my Cam and your truck) coast in drive, it is very similar to coasting in neutral. . the torque converter is so disconnected from the transmission that the engine is practically idling downhill?
Whereas a newer car coasting in drive will stay in gear, maybe lock the torque converter, cut fuel off, and use the momentum of the vehicle to keep the engine moving? When coasting downhill in the Elantra does the RPM creep up with the speed?
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