I know, I know; it's not an oil worth going out of your way for. But I was in Advance Auto Parts for something else the other day and they had it for under a buck a quart, so I picked up a few. Interestingly, there were black bottles and white bottles. The black bottles say "Distributed by Equilon Enterprises LLC, Houston, TX" whereas the white bottles say "clean engine formula" and "Distributed by Sopus Products, Houston, TX." Is this the same stuff in two different bottles, or something completely different? And, should I really care if I'm using it for a 3K OCI in a beater with 230K on it already?