Also tell them that running 1/8 to 1/4 tank full is hard on the fuel pump which is inside and at the bottom of the fuel tank and it uses the 1/4 tank fuel over the pump to keep it cool.
Prepper Rob
That is an interesting point I've never heard before. Thanks.
I had an experience with using a 5 gallon (non-metallic) gas can to fill my tank. It was a bitch! It was one of those new safe-for-Californians to use type - and you get it up and shove the spout into the receptacle and the cap wasn't cranked down tight enough so the gas dribbles out, on your shoes. That can happen with any type of can. I actually have learned to like this new safety style can, but learn how to use it. Worse, and a nightmare, is to try to fill your tank, which on my truck the cap is about waist high, with a 5 gallon can with one of those accordion-style spouts that you have to navigate into the opening as it is already pouring and goes all over before, if ever, you get it into place. Once you have mastered this task, try it in real world conditions; like it is -10F, it is dark and windy and you can't use gloves and there are cars flying by in a blinding snowstorm.
So my solution is that my 5 gallon cans stay at home as a reserve and I only carry smaller 2 gallon cans, with or without the safety spout. I also carry a funnel that will fit into the tank orifice so that I can remove an irritable spout and pour the gas into the funnel from an uncapped can.