Originally Posted By: ZeeOSix
Originally Posted By: oil_film_movies
Since webfors reported a hole in his PF64, AC-Delco is suspect, though UPF64R may somehow be better to use if the 35 psi bypass doesn't create off-spec problems.
The car this "R" filter was on is at the dealer with piston problems and internal engine codes, hummm. Wonder if GM actually specs the UPF64R for this car?
Yes, UPF64R is the right one here. GM specs these on several SGE-class turbo-DI ecotecs, except mine, a 2018 1.5L SGE LYX uses a PF64 instead..... Wish I new why GM wants a 35 psi bypass on some engines, and a 22 psi bypass on other engines that are from the same family.....
Originally Posted By: ZeeOSix
Any filter with a 35 PSI bypass valve better have some pretty strong media to take that much delta-p.
One would think that. Thats why webfors is using it on his GM 2.0L turbo-DI which normally calls for a PF64.