using your oil life monitor to change your synthetic oil is a waste of money. if you're gonna go by your oil life montior you'll be just fine running "dino" oil forever. if you choose synthetic, you can easily go 5-7000 miles between changes, much longer then what your OLM will say to
ac delco filters are alright. out of all the filters ive cut open they're definetley not the best, but they're not the worst. from what ive seen with my own 2 eyes, i would use a wal mart Super Tech before i'd use an AC Delco, as those are actually some very good filters (at least the 3387a made by champion labs is) i personally use and recommend WIX, or Napa Gold
