Speedway as wellThe Iowa/Wisconsin Stations Kwik Trip and Kwik Star some locations have DEF at the pump. Luckily they have a box you can check when searching for fuel to find stations that have DEF. In my area I would have to drive 50 miles to find a DEF station! https://www.kwiktrip.com/Locations
I don't plan on adding any DEF to my tank until it tells me. Going to see how long that will take. Depending on my driving, it might be a couple months and I want to keep fresh DEF in there if possible. My driving style I feel doesn't warrant topping it off every oil change.The low shelf life is the reason I would never buy a jug of packaged DEF. Just keep the tank full by finding local stores with it at the pump. It's not like you can't go 7500+ miles between top offs.