..as I mentioned in another post ...Castrol GTX Mororcycle oil...10w40 or 20w50 depending on season, oil every 3,000 kms...(2000 miles) and filter every 2nd change ..but I do remove it and drain it...Honda filter....note that the GTX M.B. oil is rated SF/SG...like the book says,,,nevr a problem...regards ..oldmaddog