What to put in a Rotax gear box
A few months ago this came up at our EAA meeting, but I forgot what the answer was from Rotax. What is the new recommended stuff to put in your Rotax Gear Box? I want to say it was GL5. Anyone know?
I need to put some in my gear box so I can fire up my 277. It’s mounted! So is the exhaust! pics coming soon.

80-90W GL5 synthetic