Looks like that station owner has decided to convert the station to a different brand. Gulf Mexico is opening stations and converting Pemex stations across Mexico at this time, and is supplying those stations with ULSD from the USA. If stations are advertising UBA then that is a VERY positive move but I suspect it also means that the particular station is in the process of cutting ties with Pemex. Near to us, in la Paz, I've seen three stations that have abandoned Pemex and have taken a different name (sorry, I've forgotten what it is) and are offering discounts on the fuel. Pemex has opened stations in Texas recently - major changes in the industry. Bottom line, these developments are hastening the introduction of ULSD. Good news, thank you.