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Originally Posted by almach
I filled up in Ga and drove to Al and filled up when I got off 27 MPG, driving 70 and 80 most of the way, before, I only checked once on the highway and it was 28 MPG. I drive 40 miles to work mostly back roads and a little city, I have averaged 23 MPG, the 3 times I have filled up. I was shocked, but 5th is very usable now.
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I wonder if this because the engine is working harder to push or wind up the engine higher inbetween shifts with 3.55's and working less to push the vehicle with 4.30's as the gears being as tall as they are... makes the engine work less in return ? Thus giving better fuel economy. You achieve that speed faster with less effort on the 4.30's which articulates well with 4v technology. There is less wheel spin with 4.30's and more wheel spin with 3.55's. More wheel revolutions should mean more effort on behalf of the engine and its efforts to push weight. That is if i understand it correctly.