Nissan filters often have fiber end caps. No one ever says a peep about those. Nissan engines are known to explode after 50k miles simply because of inferior filters, right?
Toyota filters often have no end caps; often sealed with a direct-applied resin. Toyota engines are known to explode after 50k miles simply because of inferior filters, right?
RR/Bently filters often have fiber end caps. And the buyers of these cars are known to use the cheapest thing they can find, right? Never mind that RR/Bently cars maybe average $250k or more. It's worth the risk to use an inferior fiber disk so "Sweetie Bell" can be stranded on her way to the salon, right?
Fram EG filters have a resin impregnated fiber end cap, sealed to the cap with adhesive. We've seen bazillions of engines explode because of the EG end cap, right?
If you prefer a metal end cap, then by gosh go buy a filter that has one. But there is ZERO proof that a filter without metal end caps is inferior simply based on the feature. There are times when metal end caps are preferred by the maker because of other characteristics (eg ... wire backed syn media needs a deeper bed of sealant because the edges of the wire are not as cleanly cut). There are times when filter makers choose metal end caps perhaps just out of convenience; less manufacturing variation to deal with from an R&D standpoint. But in and of itself, a lack of metal end cap does not imply a lack a qualify; just a lack of understanding on the part of the person who has a bias.
