Quote:
Originally Posted by jonr
I also find that there is a point right around 45 mph where my car shifts into top gear (auto trans) and seems to lock up the transmission. If I can run at this high FE point, I don't bother with P&G. If I have to average 35mph, I use P&G.
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In my Cobalt, the Auto trans shifts into top gear (4th
) around 42 mph, so if I am in a 35 zone I usually try to hover around 42. Same for a 40 or 45 zone. At this point I get mileage in the mid 40s range according to the built in gauge.