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What they do is cut open the old filter, and if the ims bearing is failing, it’s full of metal shavings. If it’s new, don’t sweat it. It’s just a nice litmus test folks use.
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1974 914 Bumble Bee
2009 Outback XT
2008 Cayman S shop test Mule
1996 WRX V-limited 450/1000
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