原帖由： jim jackson ,
The FA50 should only have 10w30 oil. Whether normal or synthetic will not make any difference to the performance. Too much oil will cause problems so measure carefully. The gear train sits in the oil and so does the clutch. Replace the oil once a year at least. I often add a little oi additive like Slick50 or Motorcoat to keep the gears well lubricated.