Hey guys, I just started slowly working through my 20,000 mile service (at 20,5xx miles lol) and my service manual references a "sport trans fluid." I don't have the part number on hand but it appears that this is nonexistent now. I ended up getting a different HD trans oil called "Formula +", was just making sure it would work in my sporty. Here it is: FORMULA+ Transmission and Primary Chaincase Lubricant | Harley-Davidson USA Oh also, would it be a good idea to get one of the primary oil funnels that HD sells? Primary Oil Fill Funnel | Harley-Davidson USA Take care guys.