Borrowed one of Scherb's ideas.
Leaving it filled upright overnight for a leak test, will flip it tomorrow for another leak test.
I plan to mount it under the Action Packer on the rack, Ill get better then half the gallon mounted and can pull it from the mount to get the rest and refill.
Ill add a spigot and vent to the Rubican when it gets here and mount it to the front drivers fender mount when that gets here.