At the end of the year competitive staiions will have the freedom to purchase fuel from other sources other than pemex. If anyone discovers any stations selling ULSD, they shoudl post the locations. I...
From what I can currently determine, about 40% of gas & diesel being sold in Mexico right now is imported since they started to allow this earlier this year. Most of it coming in by truck. I suspect that much of the diesel in Northern Mexico is actually ULSD. I may take some samples. Maybe people can keep a watch out for US plated tanker trailers headed south and how far south you may be spotting them.