Ted white certianly appears to be the most knowledgeable onthis subject and he has not led me wrong yet. I take dozens of rigs into mexico on cravans including those requiring ULSD. The only issue is the DPF filter, not the negine and from my observations those who keep the unit under load have no problems, those who do not do. The are edge tuners which will force a manual regen on both chev & Ford, but not for Dodge that I can find. Apparently about 405 of the diesel being sold right now in Mexico coems formt he uS and is ULSD, but there is no way to determine which. The Mexican web site for Gulf mexico, the biggest neew competitor was stating they will be selling ULSD, but I have yet to encounter one of thsoe stations. Pemex is claiming it will be selling ULSD at the end of 2017, but I will believe that when I see it. As far as mercedes is concerend, Pierre Blais who runs Amigos Rodantes takes 2 caravans a year throguh mexico and has a late model Sprinter diesel.He has had no issues.
