Fill the tank and drive normally. When the tank is low again (~250+ miles later) refill to full as before. Divide miles driven by the number of gallons of fuel (~10.2 galllons) you put into said tank the second time to calculate fuel mileage.
-'96 SE MTX 3L
-'98 SVT 1,173 of 6,535
-'05 Mazda 6s, loaded, g/f's ride
-Need a 96-00 manual on CD? PM or email me
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