Originally Posted by opelgt73
Though somehow last week after replacing the O2 sensor, and cleaning the air filter (where I found the pipe leading up to it had been leaking) the MPG of my Denali jumped from 13 to 18, and I do about 90% stop and go.
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Ouch! That would seriously hurt my wallet, my beater car gets 33-34 mpg on 87 octane, and that's driving pretty much any way I want. In fact I raced this car once and it got 24 mpg at racing speeds!
I had to borrow my father's Armada a while ago, and putting $60 into the tank really sucked, especially considering it wasn't empty. It gets about 12-15 mpg with 93 octane, so I guess I should be happy with my own mileage right about now. If winter wasn't coming in a few months I'd seriously consider a motorcycle just to get 45-50 mph.