Storage, of course. Immersion oil for lenses is (as the label reads) kind of synthetic cedar oil, and I have way too much already: the mic came with a bottle, the vendor threw in one more without telling me, and my Chinese wife who handled the deal just added one more to round up the sum. Anyone in need of some? Come and take...Is GQT looking for oil for storage or for using with a microscope?
GQT for your guys fun and information is not a name - the name is Mark - but an abbreviation of one of the names for my brewery that we considered (and did not pass as final); the full name would be GouQiTu: "A Dog Rides a Rabbit". My best friend grew up in Beijing in times when cars were scarce, so when he was a kid he used this name for three-wheeled motor cabs, once the only available alternative to taxis in the old capital.