i know this isnt an answer for you. but check this out. on my 2005 vulcan 2000 i read my owners booklet and i was shocked at the rating they rquired. im sorry i cant remember it right now, but when i looked it up it was a OLD rating. basically meaning any oil made at this point is beyong (better) than that rating. i was just kinda shocked at how a 05 bike would have a oil requirement that is pretty dated. basically it doesnt mean anythng except the oil required to keep my little scooter in good shape isnt a high standard oil or have the same higher standards of the oil being produced now...
chris
http://www.cruisercustomizing.com/arkainzeye