Also you can get rebates and rewards points on the Delvac right now.Yes, I just bought some Extreme to change the oil in an older Ford tractor because I didn't have enough of the T5 on hand and really hard to find locally, was going to go with the Delvac 1300 syn-blend but the Walmart I was at only had 1 gallon jugs. I usually get the Delo XLE which is a very good oil especially for the money. The Delo is usually my go-to oil for diesels and small engines.
The Extreme was only a bit more expensive than the XLE but the XSP was even higher so I went with the Mobil.