Before I did my last road trip, I changed the trans fluid and installed the 75-140 Lucas gear oil for V-Twin Transmission.
It was noisy within a few miles, Dealer stated they used the Formula + with the 1,000 mile service they did, so I drained the Lucas wrote defective on the bottle sent it back and refilled the trans with the Formula +, it was quiet again.
We put on just under 2300 miles last week and still quiet and smooth shifting, neutral is easy to find.
Everyone has a preference on the oils they like, for me in the trans and primary I will stay with the Formula +.