I just bought a 2004 Harley FLHT , took it home by trailer. When I checked the fluids it was no oil at all in the tramission. I even pulled the plug nothing no oil. I put in a liter of transmission fluid It seems to run ok I don,t hear any noise coming from the transmission. Do you think it safe to run this bike now . I phoned the guy who I bought the bike from that got me no where. the oil didn,t leak out , looks like it was drained and someone forgot to fill it back up.