why would splines / shaft needs to be lubed every 15000K,
are there other cars which have same schedule for lubing splines? I dont think so
other BMW motorcycles with shaft doesnt have such schedule as well,
I think Mechanics will tell a lot of things which brings in more business, its their basic nature to scare the vehicle owners. ( reminds me of mechanics at quick oil changing shops for cars, they are best at doing such things when you go in for quick oil change, you end up repairing a lot more than whats needed)
@Journeyman Did you lube both sides of shaft when you lubed your splines or just the rear side, if just the rear side then how to do the other side going towards engine?