Here's another stir of the Dexron-VI battle.
After a lot of Googling, I dug up a Warren Distribution - Warren Performance Products (same company, different branches) info sheet for their MAG1 Dex-VI. I can't help but think that SuperTech Dex-VI made by Warren has to be the same stuff in a different bottle (made by WPP).
MAG1/likely ST: http://www.wd-wpp.com/specsheet/61296sheet.pdf
For comparison, here's Valvoline's Dex-VI info sheet: http://www.valvoline.com/pdf/Valvoline_DEXRON_VI_ATF.pdf
Long story short, the specs on the Dexron-VI fluids are eerily similar. What that means I'm not sure.
What do the rest of you think?