What mileage does your slant six powered ride get?

Garys72Duster said
That' prob the best way to do it. For example, I filled my car up, drove 176 miles, filled it again. Took 5.9 gallons to fill it back to the top of the tank. So I take 176 miles, divided by 5.9=29.8 MPG. Then you can keep a running log, each time you fill it, then average all readings.
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That is exactly right. The more fill ups in your average, the more accurate your average. Also, you need about a "half and half" mix of city and highway driving to be even more accurate.