The way to check gas mileage is to fill the tank at the same station in the
same position each time. Write down mileage when tank is filled the first
time. When low fill the tank again at the same station. Subtract mileage
from the previous reading and divide by the number of gallons put in the
tank. This will give you a rough estimate of the economy. When you have this
figure come back and may be someone can give you an intelligent answer.
I had a 98 Venture and got about 26 mpg on the highway. It had a 25
gal tank. I have a 2000 model with a 20 gal tank and get about 25 mpg
on the highway. I was getting less mpg but I installed a new fuel
filter and air filter. My Venture ahs about twice the mileage as
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