Changing my oil and oil filter in my 01 426 I noticed quite a bit of Metal Shavings in my oil filter. The bike was bought new in August 01. The filter has apprx. 20 hrs of hard riding. The oil I am running in the bike is 10-40 Pennzoil API SL, however the Yamaha manual calls for 10-40 API SH. The SH is designed primary for motorcycles. The bike runs and shifts fine. Have I damaged by tranney or are the metal shaving part of the "break in" procedure.