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Old 05-14-2016, 09:39 PM   #57 (permalink)
Micmac1911
2011 Mazda 2 50 mpg
 
Join Date: May 2016
Location: Oregon
Posts: 5
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I have a used oil analysis after 20k miles on the air filter from CS. It looks pristine in all areas. Their filter media doesn't appear to be a liability to engine longevity.
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