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Old 12-14-2011, 01:40 PM   #8
blue2000s
Porscheectomy
 
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
Quote:
Originally Posted by landrovered View Post
So it is a magnetic oil plug that lights up when it gets too much stuff stuck to it?
Basically, it's a couple of magnets that have different electrical potential. As metal bits bridge across the two magnets, the resistance between them reduces. The plug is tuned to throw a warning when the resistance meets a certain level.
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