I wan interested in this SuperTech oil so I started looking into it. I got a little concerned when Walmart's site only brought up an SAE30 that is a bar and chain oil with "tack additives." A Google search then found a non-detergent SAE30 lubricating oil that is "Not For Use In Automotive Gasoline Engines." I really started to worry for Slomo. Then I finally found what they call their "Conventional SAE HD-30" oil. Here is a link for it:
I am sure that you cannot come to any immediate conclusions just from reading the back of the bottle, but it does appear to work for automotive applications, but more specifically for severe-duty applications such as farm and construction equipment. This doesn't mean that it's perfect for a Kawasaki FS V-twin, but it does meet the highest API service category.
And Slomo is right, the price of this oil is cheap compared to most other small engine oils that I have been purchasing. I think that my Local Family Farm and Home sells Briggs SAE30 for about $8-9 a quart compared to the Super Tech at $3.12 a quart. And don't even get me started on my Exmark oil which might be closer to $10 a gallon. The only thing stopping me from even trying the Super Tech is that I will spend as much money in gas driving to a Walmart as I will save on buying the oil.