[SEL] Oil Question

[MaytagTwin at aol.com]

In a message dated 6/18/2007 7:31:26 PM Central Daylight Time, 
jd.kirkes at verizon.net writes:

Why does the oil turn black when dirt does not appear to be a factor? 

Hi Jim,
I will speculate that when metal is broken down to the molecular level and is 
in the oil, it absorbs rather than reflects light.  Consider how when you are 
polishing brass or aluminum that the polishing rag turns black no matter the 
color of the metal you are polishing.  Polishing removes minute amounts of 
metal smoothing the surface and improving the reflective quality.
 
Your mileage may vary.
 
Regards,
Ron Carroll
 
 
 



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