Available now at Walmart, there is a new full syn Delo XSP 15W40 available in gallons and 2.5 gallon jugs. I thought it was a typo and it was actually 5W40 but my Chevron rep confirms it is a new product and is 15W40 full syn. I checked online at a few Walmarts in MI and it pretty widely available. It isn't on Chevrons website yet so I have no PDS for it.