I've looked in three different Walmart stores and their Supetech blend is no longer on the shelf. In one place I was told "its history". But they do have a five gallon jug of full synthetic for not much more than the blend cost.
The only thing consistent about Walmart is that they are inconsistent. All three Walmart's in my area carry the synthetic blend. I could have sworn that I even saw a high mileage oil.
I've used Walmart blend 10w30 in my wifes 97 Taurus for 45k miles, started using it at 70k, the engine is clean, runs good and does not use any between oil changes. I have changed oil every 5k miles.