Interesting even for me!
The database lists 10w-40 or 5w-40 as the correct grades.
Quality, there is nothing specified but the 10w-40 is likely to be semi and the 5w-40 is fully.
If the engine is in good nick, I would go for the 5w-40 as the better quality option, it will also take heat better than a semi.
Cheers
Simon