I use fram filters also. I have never seen where a fram has messed an engine up. I also figured out that a filter is not a needed thing usloess you put in garbage in your oil. I found the better the flow the less wear you have on an engine.
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My concerns relate strictly to durability. (I'm satisified that they're competitive on flow and filtration) I do 10,000 mile/6 month OCI's and I'm afraid that the fiber endcaps won't hold the medium together over that duration without warping and or partial separations. It's probably an unfounded fear, but since there are alternatives out there with much better overall construction quality (Wix, Purolator, Champion)why take the chance?