[Elsie]

It costs exactly the same to drive with a full tank as it does with an eighth of a tank (or a sixteenth).

Nope.

Fill your trunk with sand and check your mileage.

Weight is weight; whether it is sand or gas.

Also; the slight among of gas used to actually drive INTO the gas station does add up; and many folks will NOT turn off the engine, preferring to keep the car either warm in the winter or cool in the summer.

[Graybeard58]

I never figured you for one of those.