Annual Update re Mexican Diesel Fuel

Ed White wrote:
Briansue, the reasons I do not wish to post the procedures on this website, or any other website, are:

1.
I have the experience to ask the right questions of an owner, so that I can determine which is the best course of action. If an owner simply starts doing things off a pre-printed list, without having an understanding of the impact, he or she could complicate the situation rather than solve it.

2.
I need to protect the sources who have supplied me with the necessary technical information, for a number of reasons, not least of which is the fact that the EPA has specifically prohibited manufacturers from making public some of the procedures. The EPA is concerned that owners with too much knowledge may make modifications which increase emissions. I therefore have keep to a minimum the number of copies in circulation, and to first question an owner in order to determine that the problem is genuine - that it is not just a fishing expedition to find out the sources of my information.

3.
It is VERY important that there be a central database where all of the experiences can be tracked, so that the procedures can be improved, and mistakes can be avoided. This happened last season when a question by an owner led indirectly to a simplified way of dealing with Poor DEF Quality messages on 2012 and later GM products.

4.
In some rare situations, owners need access to email, and an Android based cellphone, as well as a specialty wireless item that has to obtained from the USA. I have to ensure that all of the correct items are present before explaining what needs to be done. Again, this is rare, but every situation needs to be assessed before deciding on the best approach.

5.
Bottom line, if I try to explain it in simple terms, all of the procedures are aimed at getting exhaust gas temperatures up to a level which will burn sulfur compounds out of the DPF (and the SCR in 2011 and later model years). The ideal way is to induce a regeneration cycle, which the EPA says owners must not be allowed to do, so the vehicle has to be "tricked" into starting a regeneration cycle well before limp mode. Sometimes, for 2007.5 through 2010 model years, a 15 minute high speed drive, above 74 mph, is sufficient, and is an easy thing that any owner can try without complicating matters.

IMHO, sounds like it isn't worth taking the chance of traveling SOB in a newer DIESEL rig. One reason I will keep my older rig as I don't want all the worries on a trip that is suppose to be a free from present day stuff (wanted to use a more descriptive word but didn't). Will wait until Pemex makes the upgrade before we purchase another rig or change over to gas. Economics of a Diesel Rig are changing anyway.

rocmoc n AZ/Mexico