No problem. Just following up on your initial to give an accurate picture of what the material seen is, and specifically that not metallic. As for the noted Napa Gold and Wix filters, until relatively recently and for many years were the same filters, majority spin on made in the US. Now best information says Gold filter a PGI/Premium Guard made filter. As for the Mobil 1 oil filter, for many years made by Champ Labs then some years ago switched to M&H Purolator US made as date format confirmed. Current M1 coo(s), similar to PGI made filtersThanks for the insights, still learning about filters since most of my life I was told Napa Gold and/ WIX with Mobil 1 oil.
In my observation post use anecdotes, Euro Mann oil filters, spin on and cartridges are well made and generally highly regarded. Some Euro OEM made by Mann.........and they prefer using European made ones