In my short experience with this engine, and only one oil, as noted above, oil shear isn't an issue. There are no transmission gears or wet clutches to shear the oil.
Originally Posted By: 2010_FX4
Any thoughts about using Rotella Triple T in 15W-40 or synthetic T6 in 5W-40? It holds up quite well in my Kawasaki Brute Force 750i and I would not hesitate to recommend it.
I use Rotell T6 5-40 in my 09 700xp Ranger. As far as the engine is concerned it purrrrss.. Some other aspects of these machines need some developing..