Metal Shavings in Oil Filter

4 replies to this topic
  • Fastline

Posted March 03, 2002 - 06:24 AM


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.

  • gal

Posted March 03, 2002 - 07:29 AM


hi fastline,
your bike is ok, dont worry about it, all the new bikes have it. u can get the magnetic drain plug at mxsouth or elsewhere for 11.95 and change oil more frequently at the beggining.

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  • RichB

Posted March 03, 2002 - 08:08 AM


Don't worry most of what you're probably seeing is aluminum flakes off the clutch plates. As stated above it's a good idea to get a good quality mag drain plug (terrycable/ziptyracing etc) and keep an eye on it when you change the oil.

Make sure you change the oil a lot and clean out the filter every time.


  • #302

Posted March 05, 2002 - 07:14 AM


The metal shavings are normal but I would consider a higher quality motor oil. An ordinary quart of Pep-Boys $1.30 10/40 motor oil may not be the best oil for your motors longevity. Unlike a car, a motorcycle's oil has to lubricate the transmission and clutch also. Everybody has a difference in opinion when it comes to oil. Look in the archives to help you in your dicision.


  • thumpsalad

Posted March 05, 2002 - 08:32 AM


Hey RichB,

If the flakes are aluminum from the clutch plates then they won't stick to a magnetic drain plug! :)

It took me a second to realize that. hehe!

It's strange, but I am getting very small metal particles on a very well broken-in YZ. Clutch looks like it is in good order, too.

Also, I took your advice from other posts about oil choices and I bought a gallon of the Mobil Delvac 1300 to try in my YZ400. I will try it out this weekend and post results.

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