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      12-04-2019, 08:35 PM   #5
Our03z4
First Lieutenant
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Drives: 2008 BMW Z4 3.0si Coupe
Join Date: Nov 2016
Location: USA

iTrader: (0)

I change mine every month during the winter since we are home more and have pets. I also use 3M. My filter size is 20x20x1 so the shallow depth make them clog fairly fast. I use the top grade ones, I think around $30 per filtet when bought multi pack.