mamestra
Campbell River, B.C. Canada
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Joined: 04/22/2004
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Just to comment on "if you take your truck to Mexico they might void your warrantee'. January 2008 was our first trip to Mexico so learned as much as I could from this forum including that if my truck was financed I would need a letter of permission to take it into Mexico. I wrote Chrysler Finance in Canada (I have learned since that as a Canadian I don't need this letter) which approved my trip to Kino Bay, Mexico and at no time mentioned that this had any effect on my warrantee.
2007 Dodge 3500 Quad 6.7 L Cummins
2006 SunnyBrook 32BKWS
wife Diane and 110lb German Shepherd "Tye"
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barry&vanda
Vancouver BC Canada
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Just gotta give Ed White a big round of applause for the tremendous amount of time and research he has put into this issue to keep us Open Roaders informed!!!
Honk at any silver Dodge Ram & Crossterrain toyhauler on Baja. It's gotta be us - 'specially if it says Baja and Back #1.
05 Dodge Ram 3500 Diesel 4 by w/10,000 lb winch
09 TF34MK Crossterrain toyhauler
12' Portabote w/Yammy O/B.
08 Honda Rancher ES
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wolfe10
Texas
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mamestra wrote:Just to comment on "if you take your truck to Mexico they might void your warrantee'. January 2008 was our first trip to Mexico so learned as much as I could from this forum including that if my truck was financed I would need a letter of permission to take it into Mexico. I wrote Chrysler Finance in Canada (I have learned since that as a Canadian I don't need this letter) which approved my trip to Kino Bay, Mexico and at no time mentioned that this had any effect on my warranty.
Be VERY careful concluding that the FINANCE ARM of Chrysler has any interest/knowledge about MECHANICAL/WARRANTY issues. Having spend my career in the automotive field, I can assure you they do not.
* This post was
edited 09/21/08 07:14am by wolfe10 *
Brett Wolfe
1993 Foretravel 36' U-240
Cat 3116, Allison 3060
Caterpillar RV Engine Owner's Club: www.catrvclub.org
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wolfe10
Texas
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hypoxia wrote:An engine is just an air pump and as long as water or anything that increases the compression is not introduced I can't imagine any engine damage. Look at each component and think of how it works and what affects it.
The fuel injection system could be susceptible to damage from a variety of things but surely not high sulfur fuel.
The turbo is not affected by fuel.
The exhaust is self cleaning but is the only component possibly affected over a long period of time. It is not a high dollar item.
I don't understand the concern about warranty. Sure, the engine is expensive but why would a piston, rod, valve, crank or any other component go bad due to a high sulfur content in the fuel? I can see the possibility of some sensor that is screwed into the engine being affected but I can't imagine what it would be.
The manufacturers can point at chipped engines and justify their denial due to an internal component failure, the pressures were above design limits. That cannot be caused by high sulfur fuel.
The biggest difference in the 2007 and newer engines is the LARGE amount of EGR (Exhaust Gas Recirculation). Sulfur yields sulfuric acid that is fed back to your engine.
You can, of course, CHOOSE to believe all the engine manufacturers are wrong, after-all it is your engine.
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Ed White
Kelowna, BC, Canada
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I can't speak for the 2008 models, but last year while I was in Cancun I took the time to visit the Ford, GM, and Dodge dealers to see what engines they had in the 2007.5 trucks. NONE of them were offering diesels - the ONLY pickups they had on their lots were gas powered. A GM engineer for the Duramax had already told me that GM would not be marketing in Mexico in 2007, so no surprise that weren't any diesel Chevys, but the Ford situation was a surprise because Ford had a kitset to convert the exhaust and emissions system for "outside North America". The Ford dealer rep told me they had no idea if they would even get 2008 diesels to sell. If there's someone who lives near a dealer in Mexico, how about making some enquiries?
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Ed White
Kelowna, BC, Canada
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Wolfe 10 is correct in stating that there is a larger amount of exhaust gas recirculated back into the 2007.5 and later diesel engines, as part of the overall method of reducing emissions.
However, almost all of the sulfuric acid, H2SO4, that is produced as one of the emissions when using higher sulfur fuel, is produced AFTER the DOC (Diesel Oxygen Catalyst), in the exhaust pipe!!! None of the exhaust from this stage of the process is recirculated. Therefore, the H2SO4 produced is never going anywhere near the engine itself.
It's important also to keep things in perpective. The sulfuric acid, in gaseous form, is produced in miniscule amounts, and virtually all of it leaves the tailpipe as part of the exhaust stream.
The exhaust gas which IS recirculated, is sent back through an exhaust gas recirculation cooler attached to the engine and then bleeds back into the intake ports of the engine.
On a different topic, thanks Barry and Vanda for the thank you for my contributions to this disucssion.
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moisheh
North America
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Joined: 05/04/2002
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I would think that the only damage would be in the DPF. If the usage were light then the cleaning proces would solve that problem. If the uasge were long term then the DPF would have to be cleaned by the dealer. Not a big deal. BTW: There are diesel mod outfits selling kits that allow you to remove the DPF. Illegal but intersting.
Moisheh
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hypoxia
Arizona
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wolfe10 wrote:Sulfur yields sulfuric acid that is fed back to your engine.
Perhaps we could capture that, inject it onto lead plates and have a hybrid. 
Jim
My Trailer Rebuild Project
2008 F-350 6.4 Diesel
1990 Collins 24' 5th Wheel
2001 Jayco 311RLS 5th Wheel
ATV Trailer follows the 5er
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mexbungalows
las peñas, michoacan, mexico
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Ed, I'm pretty sure that a petroleum refining engineer in Celaya told me that Pemex at Celaya has been distilling 150 ppm fuel since 2004. Five Hundred Parts Per Million fuel was the old fuel and it was noticeably yellow as dispensed. Maybe the diesel at the other huge refinery in Villahermosa is not producing 150 ppm fuel. It's darn hard to learn what is going on in Mexico sometimes. Being that a test lab in the USA will charge something like twelve hundred dollars to analyze a sample of diesel for ppm sulfur (and then they said that the sample has to be submitted in an API approved sample container) I don't think that this particular issue will be explained to everyone's satisfaction.
Again, with a l-o-n-g memory I recollect when the state of California authorized auto repair facilities to install "NOX devices" on automobiles in the early seventies. Our authoritative state engineers demanded that automobiles have their vacuum advance mechanisms plugged, and the ignition timing set at Top Dead Center. I forgot how many hundreds of thousands of motor vehicles had their engines permanently damaged, and they in turn spewed out (according to pundits) more than a hundred times the amount of CO CO2 and NOX had they left the engines alone. I also remember our authorities recommending the addition of a horrible ether compound that poisoned our groundwater. These are the same folks that damn near banned back yard barbecues because of "The Pollution". Oh yeah, forgot about diapers on livestock.
They are focusing on particulate matter emitted by diesels because just about everything else is regulated.
Ever get a whiff of the exhaust from a bus running on natural gas?
People become politicians and regulators when they find out they are not qualified to do anything else.
Hah!
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Ed White
Kelowna, BC, Canada
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mexbungalows wrote:Ed, I'm pretty sure that a petroleum refining engineer in Celaya told me that Pemex at Celaya has been distilling 150 ppm fuel since 2004. Five Hundred Parts Per Million fuel was the old fuel and it was noticeably yellow as dispensed.
Hi mexbungalows
I don't know if you inadvertently made a "typo" in your posting, but ULSD (ultra low sulfur diesel) is 15 ppm not 150 ppm. My understanding, from an email exchange with Pemex in June of last year, was that their diesel was running between 150 and 500 ppm (which is the upper limit for LSD, or low sulfur diesel).
As you say, it's hard to know exactly what is going on, but we do know that there is a mix of LSD and ULSD in their market right now. Bottom line though is that it doesn't hurt the new truck engines so we shouldn't get too consumed with worry.
I agree with your observation about political decisions on pollutants. It's always amused me that the by-product, when the new trucks go through a "regeneration cycle", otherwise known as burning off the soot, is carbon dioxide (CO2). The trapped carbon (soot) in the DPF is converted to carbon dioxide, which is, of course, that supposed greenhouse gas that some people get so upset about. So they've exchanged soot emissions for emissions of carbon dioxide. Go figure !!
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