Mexican Diesel Fuel/Sulfur Effects Update
Much to my distress I just learned here in the Southern Baja that the owner of a late model GM diesel pickup paid almost $3,000 to ship his truck back to the USA when it went into limp mode (5 mph) in...
Forum Discussion
Mountaineer42, your observations are correct. Using Mexican LSD does not cause regenerations to occur more frequently, mainly because the speed at which soot accumulates in the DPF is dependent on load conditions. The hotter the exhaust temperatures, as when hauling a heavy fiver, the slower the soot accumulates.
The greatest distance between regens that I have recorded on a 2013 GM pickup in Mexico was just over 1100 kms, but the owner had a 40 ft fifth wheel in tow.
Your strategy once "on loctaion" in Mexico is an excellent way to avoid codes due to LSD. Absolutely every owner who contacts me with codes on 2013 GM pickups has been using the truck unloaded in Mexico for a few weeks after arrival at his/her winter destination. The slower speeds when driving around town using LSD, with no trailer in tow, don't allow exhaust temperatures to get high enough to prevent the deposit of sulfur compounds, so codes are guaranteed within a few hundred kms.
It is interesting to note that owners who come to Mexico in a caravan, which usually means the truck is hauling load for the entire trip, never have code issues. The higher exhaust tempartures while towing ensure that sulfur compunds don't deposit in the SCR. Based on the data I've collected over the years, a temperature above 350 degs C at the SCR will prevent sulfur deposits.
The greatest distance between regens that I have recorded on a 2013 GM pickup in Mexico was just over 1100 kms, but the owner had a 40 ft fifth wheel in tow.
Your strategy once "on loctaion" in Mexico is an excellent way to avoid codes due to LSD. Absolutely every owner who contacts me with codes on 2013 GM pickups has been using the truck unloaded in Mexico for a few weeks after arrival at his/her winter destination. The slower speeds when driving around town using LSD, with no trailer in tow, don't allow exhaust temperatures to get high enough to prevent the deposit of sulfur compounds, so codes are guaranteed within a few hundred kms.
It is interesting to note that owners who come to Mexico in a caravan, which usually means the truck is hauling load for the entire trip, never have code issues. The higher exhaust tempartures while towing ensure that sulfur compunds don't deposit in the SCR. Based on the data I've collected over the years, a temperature above 350 degs C at the SCR will prevent sulfur deposits.
