Went to Checkers today to pick up some
oil. Their flyer this week has a misprint on cases of Penzoil or Chevron dino
oil. I asked them about it and they honored the price, even though there was a note stuck to the rack of flyers saying it was a misprint. I didn't push them - they just said they'll give me the price. So I walked out of there with a case of Penzoil for $13.99. Tough to beat that.
YMMV but it's worth giving it a try if you need
oil.