1. Is it better to only fill your gas tank up about half way or 2/3 rather than completely full?
2. How much more does it ACTUALLY cost to use mid-grade opposed to normal unleaded and high-grade opposed to mid-grade?
my thoughts:
For the first one, the extra weight from the full tank of gas could decrease fuel economy, but also, if you filled up less that would mean you'd have to fill up more often, using gas in the process.
and for the second one, the higher grade costs more, but possiblly increases fuel economy because of it's higher octane.
2006-10-01
13:38:02
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