Just a short note,
Good news, your Heavy Duty 85-140 Gear Oil works.
Heres the story-
Got a 96 Harley Road King with 45,000 on it. Got her used about a year ago, looks new but rode hard. The transmission shifted hard when hot, chunky anytime hot or cold.
Tried every gear lub made and even my own mix. Just about to give up when at local parts store saw your display. Hey if it work for for a 10 wheeler its got to work in a Harley, well guess what, it never shifted better hot or cold maybe it in my head but it even seems snapper through the gears.