he told me 10w40 for motorcycles,..well, not so much "motorcycle" oil..
..that's generally formulated for bikes with wet clutches...
..any good 10w-40 will do y' for a few more miles...
..some would say to wait a cpl or three changes before switching to synthetic...
..at some point you should switch tho...
..as everybody says...every little bit is a plus...