Hi Micka, I think you are referring to this thread:
https://www.outdoorking-forum.com.au/forum/u...=3658&Words=yamaha&Search=true#Post11309

It was Joe Brown who told you the lower bearing oil reservoir holds 100 cc of oil, but he didn't mention what type. I suggest you give him a day or two, to see if he sees this thread. If not you might PM him. Joe is a very knowledgeable and helpful guy.