Of course I didn't fill the AW with oil. I injected whatever amount was recommended, either by Sheldon or some Sturmey Archer site, of which there seem to be plenty. I recall that, when I stripped down the AW originally, it only contained grease, although its date (1982, from memory) suggested it had originally been an oil hub. In fact, it had the oil cap, so it must have been. Possibly an earlier owner had had trouble with it shedding oil. They're very ingenious things, but I don't see myself having another. I quite like the idea of single-speed. I planned to build the Bob Jackson as a single-speed, but I couldn't get the chain tension quite right.