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2020 Silverado 1500 4WD 4.3L Custom. Second oil change, 10K miles on the truck. First change was about 3500 miles (not based on oil life monitoring system). Out: SuperTech 5W-30 Full Synthetic and PF63E ACDelco filter. In: Valvoline Advanced 5W-30 full synthetic with Fram XG10575.

Yeah, I poorly was trying to say that removal of the metal made room for more pleats, not that it was the reason they did it. I can imagine taking just the metal and shaping it into pleats without filter media would take up quite a bit of space now used for more media or different media.

Supertech doesn't make an equivalent of the PF63E unfortunately.

One thing a tear-down showed was that the old version with the wire backing had pretty significant amount less media for filtration. The new version had something around 8-10 more inches or more of filter media, which would allow it to hold more dirt that it filtered. I didn't see the number of...

Agreed. Just think the difference between results may be something requiring precision instruments to measure rather than what one may expect after hearing a discussion of AMSOIL vs other brands. Based on the claims of many online, I'd expect a torn down engine to show significant wear visually...

I most always use SuperTech in my cars. I'm trying Valvoline in my Silverado this oil change to see if it makes any of the normal engine sounds a bit quieter. I had a Nissan Altima and for the life of me can't remember if it was the Pennzoil or Valvoline that made it a bit quieter. It was never...

I thought the PF63 and PF63E had different bypass pressure ratings, with the PF63 around 15 and PF63E around 22. If that's still the case, my 4.3 Silverado calls for the PF63E and I wouldn't use a PF63 instead to avoid bypass events and lower differential pressures.