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Old 01-14-2017, 05:55 PM   #3
rick3000
There Is No Substitute.
 
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Join Date: May 2007
Location: West Coast
Posts: 3,253
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If you drive exclusively with the top down, it won't do anything, but it can make a difference whenever the top is up. I use a hardtop most of the year, so I like having a cabin filter. For $20 every 15k miles I don't see a reason not to have one.
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