superfist

I worked as an auto mechanic for about 6 years and always noticed the metal 'fuzz' on the magnetic drain plugs. One of the above posters is correct in stating that it's all stuff that should drain out with the old oil anyhow.
 
 
In replacing transmission case covers and such, you'd be surprised how many vehicles have a big magnetic doughnut on the inside of the transmission pan. I've cleaned a good number of these and it's to keep the magnetic particulates from re-circulating in the transmission and reducing the lifespan of the friction parts.
 
 
Since our motorcycles share oil with the transmission and the oil circulates between many friction surfaces, I'll continue to use a good magnetic drain plug to remove the magnetic particulates from circulation between services.

Picked up the 2015 Red. It was the only color available, but luckily it was the color I wanted =)

Atlanta, Georgia.