Just thought I'd pass this along. I was shoping for oil and usually buy from Costco but found this at Walmart.com
Chevron Delo 15w-40 3,6,9 and 12 packs of 1 gallon oil for $11.45/gallon or $2.86/qt. (9 pack price).
And free delivery.
I can't remember Costco's price but this is really cheap. Amazon was around $17.00 per gallon.