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Message: <blockquote data-quote="BDCEquinox" data-source="post: 21829" data-attributes="member: 8008">That's a good price.One thing to keep in mind is the UPF64R has a 35 PSI bypass and the PF64 is a 22 PSI bypass.The manual calls for PF64. If you have an engine or oil related failure the dealer could very well deny coverage because your oil filter didn't allow enough oil through, especially if it's cold or clogged which is when the bypass kicks in. So just because a filter has the same threads and can size, doesn't mean it's equivalent to use. If you want to upgrade over the PF64 I would go with something like the Purolator Boss which has the better full synthetic mesh backed filter media but has a 25 PSI bypass. I believe the bypass ratings are +/- 3 PSI.Referring to bulletin 17-NA-157 " Note: Any aftermarket filter must also have an internal bypass valve opening pressure specification, element integrity, filtration performance, media particle trap specification and burst strength that is equivalent to the ACDelco PF64/PF63 filters."I know this very fact caused some confusion among the <a href="https://www.corvettemagazine.com/c6-c8-corvette-dry-sump-oiling-system-service/" target="_blank">Corvette community</a> due to the obvious nature of wanting the very best and to protect their vehicle. So I recommend not to overthink this. GM knows the UPF64R filter exist. They clearly list PF64 and state not to use filters that do not match the original specification which I've outlined and provided evidence. As to why GM has a UPF64R filter available, I can't say, but maybe it's listed as the recommended filter for some vehicles or a bulletin exist that list when that filter is an appropriate replacement, I'm not sure.</blockquote>

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