I have used almost exclusively PF48E filters for my Silverado 4.8 due to the number of TSBs that indicate their use. I have had no problems. I would use the ACDelco variant over the SuperTech due to the more reliable done end bypass valve. I've never been keen on that Champ combo valve. Clearly GM engineering has more faith in the dome end valve. I think they are fine filters. I think the newer small window ACDelco eCore design is very reliable. There have been very few failures scene on here. It's all I use, I bought a case off a GM sealer on eBay.
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