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I cut open the oil filter on the 2000 Boxster, I did all maintenence on the car since 2004 and without cutting the oil filte and r consistently found yellow / amber sealant bits.
When the filter was cut open I found many very small bits of amber sealant 1/64" at most and many back hard palstic bits, likely from the chain tensioners. The amount of both types of residue is far from enough to clog the filter. This is on a one year oil change on less than 5,000 miles, Mobil 1 10w-40 High Milage, the car has 94,000 miles.
Not good, for many years both the bimmer motorcycle and car, both with plastic covered chain tensioners, never showed this problem. The good part is that there were no metal fragments on the filter.