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THis may start a debate and is not directly related to the overall topic, but... After each off road race in my desert truck I would cut open the oil filter to inspect for engine damage, (copper, gold colored bearing material). I tried many filters, I was most dissapointed with Fram filters and highly impressed with Wix filters for the amount a surface area on the fliter element. I think Napa does have a rebranded wix filter. FWIW (for what its worth)
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