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               Originally Posted by 
              mikemota   
              By the way I'm gona use Yamalube Full Synthetic SAE 10-40 oil to my engine, wat do you guys think about it?.
 
 Thanks,
 
 MikeMota
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         I do prefer to use a full ester synthetic 20W50 (like the motul 7100) or 15W50 or 10W50 if you can find a full ester type, IMHO xxW40 is too thin for the gear box and clutch. For the engine itself a xxW50 is fine if you allow it to warm it before riding. If you ride regulary under -5 Celcius, then use a any good synthetic 10Wxx oil in winter.
         
         
        
 have fun,
         
        
 j.