ok the oil you have is no good! go to halford's or similar and buy some 20W40SE, it should say suitable for use in motorcycles on the container. Somewhere in your Haynes it will tell you how much you need! look in the capacities section, it might say sump then ***ml. or whatever. you will also need an oil filter ( look in haynes it will tell you). Then bike on centre stand, tray underneath, undo sump plug (big bolt on the bottom of engine) let old oil out. sump plug back in, change filter (screw old 1 off screw new 1 on), top up with new oil, make sure level is right(dip stick or glass window). done!