SUVs are evil I tell you. Fortunately as gas prices continue to climb, they will eventually become a thing of the past. I'm starting to notice a lot more small cars and scooters around here, still no mopeds. Any actual oil will lubricate a transmission much better than ATF, most 4 stroke motorcycles use the same oil in the transmission as they do in the engine, and most 2 stroke motorcycles use motor oil in their transmissions. The problem with Tomos is the clutches, otherwise gear oil or motor oil would be a much better choice. I sure would like to know why Tomos uses cork clutches, I don't believe any other moped, including Tomos before the A35, used cork clutches, and most of them worked just fine. Peace. Jerry.