There's no 10w-40 of extended performance only 10w-30 in regular and high mileage.
Did you mean this
https://www.walmart.com/ip/Mobil-1-High-Mileage-Full-Synthetic-Motor-Oil-10W-40-5-Quart/17034354
That engine is a timing belt driven dohc so you don't need anything crazy. You can use what's liked above with no problem. In reality you can use anything in it that's at least a 40 grade so all 40 grade euro and diesel oils are a great option. The clutch dog is in the lower unit and that has its own oil being 80w-90 if I'm not mistaken. I think I'd focus more on the lower unit and timing belt service.
I remember seeing a virgin analysis of yamalube 10w-40 and it's nothing spectacular. I quickly found it so I'll post it here.
This is the "Non-synthetic" stuff in the "Bold New Black Bottle!"
'bout the only thing "Bold" here is what they charge for a pretty ho-hum (or worse) oil.