Originally Posted by GM4LIFE
Looks good! I stocked up on the classic PF64s for my engine before GM discontinued them, as I didn't want the filters with the weak plastic e-core center tubes. My engine has the higher GM 22psi+ pressure specs, so I wanted to make sure the internal tube is steel, just to be on the safe side.
Ironically the "weak plastic" ecore tube is substantially stronger than the beloved metal center tube. This is certainly one of those "different strokes for different folks" kind of things, but the molded plastic cores found in the ecore filters are anything but weak.
GM went to this style filter as well to satisfy the populace screaming for metal endcaps, but GM needs the plastic cores to meet their own cleanliness standards. Steel components, even when washed, tend to be dirty on all filters...