You might get lucky in your search for the good old Southdow, but I highly doubt it. I was also searching for it, and have not found it yet.
I did look at this one:http://www.lowes.com/pd_10392-286-1...br|0||p_product_qty_sales_dollar|1&facetInfo=
and seriously considered it. But in the end I just stuck with what is already in my tank.
Yeah I've tried searching for it many times on the web but it's just not around anymore as Southdown. I want to do what marrone said but I have no idea where to find the contact number simply because I don't know who the manufacturer is



