"if not, what should i use? ...im sort of in the middle of a tour right now and am in the middle of nowhere in a grocery store...all they have is automotive oil...should i use motor oil? "

If that is your situation and you are limited to what is in the grocery store, then go with the WD40 - spray and wipe daily. I'm thinking that a small spray can of WD40 is smaller/lighter than a qt of motor oil.

You might find White Lightening lube in a WalMart.