There are 7.49gal in a cubic foot, at about 8.2lb/gal for water. 5gal is about 2/3cuft. Gasoline is just over 6lb/gal, roughly .75 the weight of the same vol of water. Heck, even heavy bunker oil floats on water.

A full 5gal jerrycan is thus about 30 pounds plus can weight.


Not responsible for advice not taken...