I've been using Scepter's water and gas cans on the back of my Rubicon for about a year. They are made out of some very tough plastic. Gas can has a red ring around the lid and stamped "Fuel" on the side, but it is not D.O.T. certified in the US, not sure about Canada. I like them better than the old metal jerrycans. Make sure to order the spout for the gas can.
