Yeah, been discussed ad nauseum. Add your house rule or not. Your game, your decision.
My comment is I allow xAK's to ship fuel. One of my degrees is ChemEngr and I used to work with this stuff. Gimme an xAK and a few welders and I will have you a tank installed in a hold with pumps in less than a day. It ain't rocket science. In war, you make it happen faster. Yes, you waste a lot of space. The designers guessed 50%. IMHO, not a bad guess.
Now do I use them this way? Hardly ever. The cost per mile of doing this is ruinous to IJ economy. You may as well use the Yamato to transport the fuel.
Anyway, it ain't that big of a deal in the game. If the IJ does it, the are wasting fuel due to poor planning that they can't afford to lose. The allies are already winning that point. If the allies do it, who cares? They have so much of everything that of course they will get it there.
PS: oh and I posted this years ago: in New England in the winter, yes you need to heat the stuff. In the DEI at any time of the year, it flows just fine.
< Message edited by PaxMondo -- 10/31/2017 9:24:01 PM >