I've never had problems with SuperTech, but, I'm not married to it, either. I just got back from Target with 24 quarts of 10W-30 Havoline. They have the same price on Chevron Supreme, too (at least at the Fontana, CA store I went to). The older Havoline says Equilon on the back of the bottles. The newer Havoline says Chevron instead. That 6300 vs. 5300 @ -30 pumping might just be a typo... It seems odd that Chevron would go to the trouble (read, "EXPEN$E") to supply an oil with different specs for the subsidiary label. Even if the additive package was cheaper, it still might be more expensive to blend since Chevron would have to maintain separate additive stocks and would also forfeit the economies of scale of running a common production run into two different label bottles. (But, hey, what do I know?) Also, are you sure that that spec difference was for the same weight grade range? Not trying to pick on you, JonS, just trying alternative explanations for the apparent spec discrepency.