Picked up one of these scooters on the 5th , nice machine . The owners manual specs the engine and final drive / tranny fluid as Honda HP4M 10w 30 . Problem is , Honda dealers around here do not carry the 10w 30 only the 10w40. Same JASO spec.of MB , just different final weight number . This 10w 40 MB should be ok for this unit....Ya think?. I joined the PCX forum. The riders there say the MB (molly) isn't really important , but , the Honda engineers spec'd it , so I'd think it is beneficial .