From everything I've seen so far, MH's are temperamental at best. Why would anyone in their right mind intentionally put their power plant, or exhaust system, at risk while traveling in a foreign country?
This comes up all the time on this forum. There are those who say it OK to take a newer diesel into Mexico based on reports from those who have done it. But the question comes up in me - how many of these vehicles that travel in Mexico actually know to report if they have issues and where do they report it? So the reports that the statistics include in their conclusions could or should be based on all travelers and not just on those who have reported. We have never seen any posts on this forum that state exactly how many reports from drivers there have been to base the conclusions on. I do know that people have done it and that there have been some issues. My concern is what happens when you put 500 ppm fuel into a system that is designed to handle 15 ppm? There is an expert who reports all this stuff here and many forum users take his word for the reported results. In all the years I have never seen what qualifies this person to be the expert. And almost all the reports have to do with pickup trucks from the big 3 US auto makers. I have seen nothing about engines in large motorhomes such as Cummins - and nothing about foreign engines such as Mercedes. This may mean nothing. What we have heard is that some parts of these newer systems may have a certain lifespan and though there may not be immediate problems there could be a shortening of the life of the parts and replacing or repairing these parts could be expensive. I am no expert and make no claims about knowing anything about any of this. I always suggest contacting the engineering department of the actual engine builder to ask their expert opinion - not a dealer or local mechanic but the true experts at the manufacturer.
