Here is another link to the Rotella Motorcycle Oil "Forum", and this thread seems particularly suited to our discussion here (how many times are we going to hash this out?)
About 1/2 way down is a replay from the SHELL TECH EXPERT, which confirms my believe that this oil is suitable to our needs (and at $13 / 3.75 litre jug) SHELL MOTORCYCLE OIL FORUM

Keith
Houston
Ridin'Texas
'04 Speedmaster
AI removed, Pingle, UNI Filter, 1 shim, straight-through slash-cut TORs, Stage 1 DynaJet, 140 mains, 3 turns, 16/42 final drive, 115K
2020 T120 Black