The part about a motorcycle oil for motorcycles. Well, Amsoil too, but to a lesser degree. :)
That's just an excuse to put a higher price tag on a can of "Motorcycle Oil". I've never run motorcycle specific oil in any of the bikes I've owned and ridden over the last 50 years and several hundred thousand miles. None used any oil to speak of, except for those pesky 2-strokes. :) And I've never had any serious repair problems, except those I caused myself. :)
I've got an '86 Yamaha FJ1200 with nearly 60,000 miles and it has had nothing but Castrol GTX and Castrol Syntec run through it and it runs great and uses no oil.
