What oil to use

Hi ....... I have just about finished my St 70 Lady Dax.
What I would like to know is it ok to use fully sin oil in my bike?
If not what is best.
Cheers John

Yep it's good.
Any 10w40 single or multi grade will do th etrick.
The cheapest oil available now is far superior from the most expensive oil they sold in the 70's.