If they also carry products targeted at motorcycles chances are they also have some sort of air filter oil, though it's usually a lot thicker than what's commonly used in the on road sector, some of the off road guys use it, mainly because you can buy a can of it and never again worry about it running out. Chainsaw bar oil also has very similar properties (very sticky).
2 stroke oil should also be usable if you're looking for something that's a little thinner viscosity.