Just to throw in my 2 cents, I would recommend pure synthetic oil. it is worlds better. My last bike had 96,000+ miles on it including getting my race license & my first couple race wknds, then LOTS of year-round street miles. No issues with clutch slip ( this is the only argument I evet hear against synthetic oil ). I haven't heard any such stories from mineral oil users (not that it couldn't happen)

 

I highly recommend Amsoil. I've been running this in my 08 YZ250f dirtbike and I ride this machine hard. Very high quality stuff !

 

3.9 liters if changing the oil & filter. like someone else said, you should download the manual, it's very helpful.

 

I'm resurrecting this thread just to say that I changed my oil tonight.. first time with the new bird.. I must say, she likes it nice and slow... very intimate.