DF came almost empty of oil and the owner's manual said to drain and fill with10w40 motorcycle oil so that is what I did at uncrating. I also installed a magnetic drain plug (MDP) at that time.
http://shop.ebay.com/i.html?_nkw=mag...+ructus&_rdc=1
Today I passed 180 miles on the bike and a sticker on the engine said to change the oil and clean the strainer (300KMs) so I just did the task a few minutes ago.
I found what I usually find on the MDP at first oil change. It's real fine metal particles. Happens on almost all my vehicles.
Whether it is worth fooling with is debatable but for $15 or so ....
Usually the amount is much less at time goes on.