LSD is still available in the USA. It is not at any truck stops. Must be an industrial or off road use. I dont think the Mexican truckers with old Dinas would be happy with ULSD. Some of the injection pumps do not like ULSD. There will be a day when Mexico lives up to it's promises and requires the vehicle mfrs. to have the pollution equipment that does need ULSD. Don't know if I will live that long!