It's
one jug of oil.
That's all I need to know.
Having a BMW and a Yamaha in the garage really screws with your head some days. Oil can be had in 1 gallon jugs, or 4 Liter jugs, among other options. the GSA took 4.25 Quarts, or about 4 liters of oil. The Yamaha took 3.6 quarts, but because it's a dry sump, 4 quarts was no big deal and because of my drain method, it often took a bit more than 3.6 quarts if I was being particular about it. Don't get me started on the diff! BMWs are stupid about that, requiring a measured amount and not liking it if they are over filled. And unlike the Japanese bikes, if you over fill it, nothing comes out the fill hole. That was a new level of stupidity when I first learned about that.
I think I recall my FJR also taking 4 Liters for correct fill, but it's been too long. It would be nice if you could just pour the whole jug in on all bikes, just know what size jug you need!
The little scooter takes 800 ml but the manual lists it as .8 quarts or 800 ml... But .8 quarts is only 757 ml. I just add the metric amount since it's made in Thailand anyway.