Does the weight of a full tank of gas vs a 1/2 tank make a significant difference in mileage. If so, for the truly hardcore, filling only 1/2 (or 1/4) of a tank at a time could make a difference. Of course, the cost in time is much greater. But that may result in savings since one is essentially "dollar cost averaging" gas into the tank.

cx

 

D'OH! I just saw a similar thread.
Sorry for the redundancy.

cx

 

Let's use the other thread....Gonna close this one....Thanks.........

https://www.greenhybrid.com/discuss/...ll+tank+weight