Quote:
Originally Posted by wintertopdown
I've been commuting the same general routes for 5000 miles on 93 with avg of 19mpg. My first round trip on 87, 25mpg. According to the cars computer.
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My computer varies by 3mpg on the same 40 mile trip daily. It's highly inaccurate. You're also dealing with warmer weather, quicker warm up times, and cars get better economy with higher temps. There is not going to be a 5mpg difference in just gas.