I have been reading threads about these filters for years, and they are always spammed by the same member who claims to use them on all vehicles but never posts a UOA. Located a 9/2018 UOA on one on a site "e90post" and the title is "K&P S38 N52 Stainless Steel Oil Filter UOA."
The car owner installed it at 60705 miles and did a UAO at the next oil change at 69289 miles after an 8584 mile interval. The filter was in good shape and the Blackstone UOA was excellent, Blackstone was very impressed with the analysis and indicated engine was wearing very well.
However, 4/2019 and at 73300 he changed the oil filter gasket and found that around 50% of the pleats in the filter had collapsed and the filter was clogged. When he contacted K&P they stated this was due to the filter becoming clogged up with too much debris and being subjected to too much pressure. There are several pics of the condition.
K & P sent over a PDF showing the condition of a new filter and the condition of 2 used filters, 1 pristine and 1 very clogged. The doc seems to place the blame on the owners.
So while it appears the filters do a good job filtering, they are limited in how much material they can hold.
The car owner installed it at 60705 miles and did a UAO at the next oil change at 69289 miles after an 8584 mile interval. The filter was in good shape and the Blackstone UOA was excellent, Blackstone was very impressed with the analysis and indicated engine was wearing very well.
However, 4/2019 and at 73300 he changed the oil filter gasket and found that around 50% of the pleats in the filter had collapsed and the filter was clogged. When he contacted K&P they stated this was due to the filter becoming clogged up with too much debris and being subjected to too much pressure. There are several pics of the condition.
K & P sent over a PDF showing the condition of a new filter and the condition of 2 used filters, 1 pristine and 1 very clogged. The doc seems to place the blame on the owners.
So while it appears the filters do a good job filtering, they are limited in how much material they can hold.
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