“API classification SF or SG”
In hard copy manual those arethe primary statements about what oil to use.
There in the manual itself there is no list of brands.
As far I can tell in 700 hours on our 912UL results with
Castrol Actevo Xtra 4T 10-40W semi-synthetic, a motorcycle oil, it is highly satisfactory.
And fits the above criteria out of the manual. It's not cheap, but less than the oils for Rotax than CPS and the other Rotax type vendors sell, and locally available at the motorcycle shop.
I did find somewhere that Rotax recommends Aeroshell Sport Plus 4 specifically/particularly if running primarily on leaded fuel, but that stuff is costly and not available locally.... a bit of a PITA to order.
QUESTIONS:
# Anyone using or have opinions or info on Castrol Actevo Xtra?
# Is there a current list of suggested or approved specific oil brands?
# What are you using, and why?
Al