Walked by the oil section at my local home depot and noticed that the Castrol synthetic is a full $11 cheaper pwr 5 quart jug than local oreillys. As a matter of fact the Castrol and a fram filter was cheaper than oreilly brand synthetic with a microguard filter. I was extremely surprised by this and bought enough stock for 3 oil changes. Am I the only one that didn't know home depot carries cheap oil?