The cost of Delo at Wal-Mart has gone from $1.77 to $1.82. I did notice the price increase of Mobil one and a shelf full of Chevron Supreme 5W30. I forgot to take notice at the price swap of Chevron and Havoline. They did have a sale on Syntec Blend in the 15W40 form since it was discontinued.... i would have gotten some but they had one quart left....