So a Fram PH7317 will have the fiber end caps right, and the fiber end cap design doesn’t leak.What models … XG, TG, PH ?
If they are fiber end caps I would not be that concerned, regardless of the few fiber end cap filters shown in flashlight tests because there's a 100% seal impression shown on those examples. The leaf spring needs to be in the same exact position on the end cap as assembled before cutting open for the light test, and if not the seal test is invalid.
If that is correct, I can continue buying the Fram PH7317 filters since they don’t leak, right?