You don't say what country you are in/shipping from. I think quarts or litre containers may be the best alternative. Most guys (and one girl) run somewhat smaller motors with the diesels. Hazmat fees are better that way too, maybe, I am guessing you are in the US. As mentioned, the ether and DII is the hardest stuff to get. Amsoil here is hard to find and ether is only in the spray cans, and is diluted in my neighborhood.