Quote:
Originally Posted by tangofox007
It's not the cotton that is the problem. "Cotton gin waste" (ie: floor sweepings) includes rocks, dirt, sticks, insects, etc. I cut open a STP filter (made in India) sold by Autozone and found all of the above items inside. Others have reported similar findings.
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Agreed. We cut open about 1/2 dozen filters back in the thread. Most of them were crap.
For the 603, the OE filter and the Mahle are pretty decent, but, I'm sure there is variability among manufacturing facilities.