Go to:
http://msds.walmartstores.com/
Have the UPC of the product and you can find out who manufactured the oil. (or just search for "SUper Tech" for all Super Tech products)
Please note that "Specialty Oil" and "SOPUS" are Pennzoil/Quaker State subsidiaries.
Warren Distributing markets motor oils under the well known "Accel" performance brand.
I have been using SuperTech motor oil for a few years. Works fine for me. My minivan is nearing 200K and has been fed conventional oil (whatever was on sale) for its entire life. Just so happens that the past few years, the Wally World oil has been unbeatable in price. The API label is all I need to see. My old minivan doesn't burn oil, and is quiet as a mouse. Still pulls 24mpg on the highway.
For a HT engine being fed a 20:1 mix, you can run just about any oil. I believe my old Lawn Boy specified 32:1 when using Lawn Boy TC oil, or 16:1 when using 10W-30 motor oil.