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Old 10-10-2012, 02:34 PM   #1
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Diesel Fuel in Mexico

Tow 5th wheel with a 09 Chevy DuraMax, headed down the Baja in January. Concerned that the low sulphur diesel fuel will clog the DPF and put the engine in the limp mode. Does this happen or should I just not worry? Anyone have experience with this issue would appreciate hearing from you
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Old 10-16-2012, 12:34 PM   #2
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There are many fuel additives you can use. The problem is that the low Sulphur reduces the lubricity of the fuel. Your injection pump will suffer because the lubrication of the internal parts is reduced. Stanadyne and others make additives to counteract this. Some people use 2-cycle oil as an additive also.
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Old 10-16-2012, 12:43 PM   #3
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Your using low sulfur 15 ppm fuel in the states aleardy. Is it lower in Mexico?
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Old 10-16-2012, 01:02 PM   #4
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low sulfur diesel fuel

Ultra Low Sulfur diesel is 15 PPM, Mexico only has Low Sulfur diesel which is 500 PPM.
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Old 10-16-2012, 01:29 PM   #5
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Guys over at the Duramax forums:
http://www.duramaxforum.com/forum/20...fur-fuels.html
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Old 10-16-2012, 01:46 PM   #6
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Quote:
Originally Posted by Full.Monte View Post
There are many fuel additives you can use. The problem is that the low Sulphur reduces the lubricity of the fuel. Your injection pump will suffer because the lubrication of the internal parts is reduced. Stanadyne and others make additives to counteract this. Some people use 2-cycle oil as an additive also.
The Mexican fuel has MORE sulfur in it than the US fuel does so it's better for lubricity.
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Old 10-16-2012, 02:06 PM   #7
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Quote:
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The Mexican fuel has MORE sulfur in it than the US fuel does so it's better for lubricity.
But worse on the emissions system designed for ULSD.
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Old 10-16-2012, 02:07 PM   #8
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Diesel in Mexico

Yes the higher the sulfur the better the lubricity,. My problem is the DPF on my DuraMax which tends to get clogged because of the sulfur content which makes it go thru a regen process which lowers my MPG. Yes, I can remove my DPF buy a tunner and void my warranty & maybe not pass the Colorado emissions test I must undergo in 2014. Looks like additives will be my best bet.
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Old 10-17-2012, 07:22 PM   #9
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Check the diesel forums like the duramax one and you will find information on modifying the truck to handle the higher sulfur fuels in Mexico. GM and others export vehicles out of the country and this is not an uncommon concern. You will need to undo the modifications upon your return to pass the emission controls, have warranty coverage, and keep our air as clean as possible. I would want to find an experienced diesel mechanic to do the work at both ends.
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Old 05-27-2017, 02:59 AM   #10
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correct: 1/ sulphur will enhance lubrication, but increase emissions. 2/ the emissions increase will clog your DPF quicker, causing more regens and thus increased fuel and def consumption [and possibly dirty the motor oil quicker].

per PEMEX, all diesel stations in Mexico will be selling ULSD by 31 Dec 2018. I would expect the stations to be mostly along the main highways and cities, not in the villages.
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Old 05-27-2017, 07:52 AM   #11
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Just an FYI, sulphur itself is not a lubricant. In the refining process when sulphur is removed some of the lubricity is removed. Adding 2% bio-diesel makes up for the loss.
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Old 05-27-2017, 09:27 AM   #12
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Delete your truck. Dump the DPf and get a tuner. Just run the stock tune and you'll get better MPGs and can run any diesel.
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Old 05-31-2017, 08:23 AM   #13
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Mexican Diesel

We drive our Ford F250 in Mexico for months at a time and this time when we came back to the USA we had problems related to clogged fuel filters. Make sure to change the fuel filters when you return to the USA.
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