Our local Wallyworld has Mobil 1 in 5-quart containers, and it shaves almost a buck a quart from the price. I saw the same price at Autozone, but when I looked closely, it was for only 4 quarts.

I've used Mobil 1 in all my vehicles for the last 10 years, and see no reason to change. The '34 gets it's first Mobil 1 infusion after the first few hundred miles.