Stop in for a cup of coffee
Good stuff!
Not sure. Some sort of aqueous solution and some of its components settles. Best to shake before using.
The cans that size fit in the ammo pouch used for 30-06 in strips (Springfield) or clips (Garand).
Don't fit in pouches for 1911 or M1 carbine mags.
That example has spec number that puts it around 1943-45.