Offhand this appears to be more an illustration of grease than oil, but I'll let it fly. The freewheel is oily, after all. It's a good bike themed shot and I expect it to do well.
OK, you caught me! :) I figured it for a stretch but there is definitely oil in the picture too.
Offhand this appears to be more an illustration of grease than oil, but I'll let it fly. The freewheel is oily, after all. It's a good bike themed shot and I expect it to do well.