Up until this month I always bought the dino juice at Costco on sale which a
few cases of lasted me until the next Costco dino juice gas engine oil sale.

Now that Costco no longer seems to be selling any dino juice I'm looking at
their full synthetics and blended synthetics for comparison purposes.
https://www.costco.com/motor-oil.html

What do we look for to compare their ~$2.50/quart full synthetic with their
roughly equivalently priced blended synthetic gasoline motor oil selection?
https://www.costco.com/mobil-super-s...100594938.html