Cut open an ACDelco PF52E ecore that has 1293 miles on it. Filter was used for approximately five weeks. The reason I changed out early was the fact my Cutlass was not liking the MaxLife 5w30 blend much. Engine sounded fine at first, but about two weeks later it was getting rowdy. The only reason I used the MaxLife was because I got the jug for free after jumping through some rebate hoops. Previously, I used Pennzoil High Mileage Vehicle 5w30, and the engine sounded quieter on that oil. It has Castrol 5w30 High Mileage in it now because I got it on BOGO at Dollar General for $2.03 a quart. Motor sounds fine for now. I think this GM 3.1 likes thicker oils.
The filter did have some small grit like carbon chunks in the can, but I did not see any shiny. End caps were still glued on good. I do not have a filter cutter, so I got it open without damaging the filter, but the can is mangled.
The filter did have some small grit like carbon chunks in the can, but I did not see any shiny. End caps were still glued on good. I do not have a filter cutter, so I got it open without damaging the filter, but the can is mangled.






