My new scoot has just reached its first oil change... 90wt oil for the gear... what about the engine? I think 30wt... My manual went missing on my first day, I set it down to read it and it was gone.. all I know is that I took it out of my "glove" box when I drove my scooter home its first day... didn't realize I paid for the leg accessory on my manual. Does anyone recommend a specific type of oil? I have always used synthetic in all my vehicles with fantastic results 100k miles later. I am hoping my scooter also likes synthetic for the long haul. I have always preferred Mobil 1 for synthetic but all the rating I have read were for cars... not scoots.