Aprilia leonardo 125 rotax engine oil fill

Hi there all. How do i know how much engine oil I put in my aprilia leonardo 125. ( rotax engine ) . And what's the best to buy for example castrol power release 10w 40w 4t

Many thanks for any help you can give.

 

hi Daymyan , have a look at this link to the prilly leo 125 service manual ( i have made sure its on the corrct page for oil checking and change

https://www.manualslib.com/manual/363517/Aprilia-Leonardo-125-1999.html?page=43#manual

 

1.1 litre with oil filter, 5w40