There was a lot of discussion on the oil filter on the lfx engines. Factory sent a lot of the lfx engines out with the pf48, later on there was a tsb suggesting to use the pf63 and even gm dealers continued doing changes with the wrong filter. I know, our car had several changes done by the dealer with the pf48. The stp filter may not be to the specs, would change it. Agree with hatzie here, run the delco filter.
Well damn it lol. Thanks
So the pf63 is the correct one?
Autozone has a pf63e? That says is for it.