Well water weighs about 8 1/2 # per gallon, gasoline probably about half that. If you have a 15 gallon tank then full weights around 60 pounds or so? Need to get some math majors need to figure out the energy consumed to go from stop to say 70mph with a 3030 pound car Vs a 3060 pound car (1% difference). Once your at steady cruising speed, wind-drag represents the largest energy cost. I suspect your right foot acceleration rate habits from stop signs has a much bigger impact then how much fuel your packing.
Originally Posted by K2WH
Reality is that which, when you stop believing in it, doesn’t go away.