Use Castrol syntec 10W40, or if you too afraid of the side effects, use just the standard Castrol 10W40 (white bottles w/ the green cap). In my opinion, Castrol oil performs much better than any other brand, and is recommended for Hondas. But if you decide to use Castrol, I'd suggest doing a proper oil flush, and time to start learning to do oil change urself man...