I went to Wal-Mart this morning to pick up a quart of oil becuase I needed a little to top off my truck. I use Valvoline Maxlife Synthetic 5W-30. The price was $4.57 for one quart. Back at the end of April, when I changed my oil, the price was $3.76 for a quart. That is a increase of $0.81, or over 20%. I know prices are going up on all items, but that seemed like a big jump even considering what is going on in the gulf. Anyone else taking note of the rising prices?