PSL14459 Cut Open 7592 miles

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Sorry for the [censored] pictures - I only had my cell phone on me.





This came off of a 1996 Mazda Miata after a 7592 mile/4 month run on M1 0W-40. The seam area looked pretty ugly but was totally intact. Curiously, the media on the opposite side was perfectly straight. The element was very rigid (+1 for wire backing) and could have likely held up for 10k easily. Silicone ADBV was in great shape and flexible. Nitrile gasket was more fragile than I would have liked but held up. Next time around I'll be sure to have a real camera...

Related - why do PureOnes use a silicone gasket and Synthetics use nitrile? Seems backwards.
 
Looks ok. But agree for the premium price one has the right to expect a more uniform appearance to pleating in the seam area.

As for sealing gasket, P1 does use a 'PTFE treated' sealing gasket (and has for as long as I can remember). But afaik it's still nitrile in composition, not silicone. And really P1 is unique in using the treated sealing gasket. As long the filter is installed properly, ie., not overtorqued, with layer of fresh oil, shouldn't be an issue.
 
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