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      01-16-2014, 05:19 PM   #20
Hoooper
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Drives: 335D
Join Date: Jun 2013
Location: Petaluma, CA

iTrader: (0)

just replace it when its dirty...? If you live in a location where there is a lot of dirt/junk in the air you will need to replace it more often than someone who lives in an area where there is very little junk in the air. An arbitrary timeline like every oil change or two is good for dealers who do everything strictly on a timeline, but it doesnt really apply if you are capable of making the judgement on your own