PQIA tested it and it passed just fine. I'd use with confidence in the right application, in fact I stocked up when Menard's had it for $5.99/5qt and plan on using it in the Monte.
I had 3 oil changes of smittys in my old stash. Used the oil in my old s10 and it ran totally normal. I dumped at 5000 miles. I would buy more but the local kmarts all closed down
I will post my 2 cents. I put it in my friends old Caravan with the 3.3 V-6 and a Pronto P0-241 almost 7k ago. It didnt hurt anything my friend said, and when I told him what I paid and that there was a rebate along with it; he about fell over. I would use it if I didnt have a 600 quart stash
I've used the regular Superflo and it's fine. Smitty's has a decent web site. Call their sales department. I'm sure they give jobbers some good pricing compared to the major brands.