Here is a Napa Gold 1515 filter that was in use on my buddy's Jeep 4.0L for 5,000 miles with Pennzoil Yellow Bottle 10w30. The filter media was a little wavy all the way around, but besides that it was in good shape. The silicone valve was in good shape, the media was still strong and held together well, and there was no start up noise with this filter.





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2000 Jeep Cherokee Sport 4.0L (144k) - PYB 10w40, Wix 51085, Magnefine trans filter