You are forgetting the metal center tube and crimp, neither of which are "pulled in".
Oil is supposed to get past the endcaps you know, that's how it gets to both the media and the bypass valve. The top endcap on the Fram is also octagonal to promote oil flow into the filter.
Oil is supposed to get past the endcaps you know, that's how it gets to both the media and the bypass valve. The top endcap on the Fram is also octagonal to promote oil flow into the filter.