WestyWanderer
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Baja Sur Diesel
Hey all,
I used the search function for this question but couldn't find the old thread about ULSD in Baja Sur and the most recent topic was from 12/2024.
Whats the current availabilty of ULSD south of Jesus Maria? Anyone on the forum have first hand experience driving your less than 5 year old diesel
truck into Baja Sur?
Thanks in advance.
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surfhat
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You could try mixing your tank instead of running it dry while you can still buy ULSD In Baja [norte]
I thought there was a post somewhere about a few Baja Sur stations that were carrying ULSD.
My 06 diesel Sprinter runs on it all and why I bought an 06 model year in 2010.
Maybe that Baja Sur diesel fuel notice was on the Sprinter van forum. You do not have to sign on or sign up to view the postings.
You can stretch that last ULSD tank far with some timely fill ups. Others have reported doing the same with no problems.
Happy and safe travels.
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chippy
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Yes, all Repsol stations in Baja California Sur offer UBA diesel, as this is the only type of diesel available in the state, with all diesel fuel in
Baja Sur being ultra-low sulfur diesel (ULSD) as of late 2020 or 2021, according to anecdotal and lab-tested evidence. While official confirmation is
difficult to obtain from Pemex, the national fuel provider, the low sulfur levels confirm the widespread use of ULSD in the region.
Why is this the case?
Refinery Upgrades: The local refinery has been upgraded to produce ULSD fuel, making it the only type of diesel available in the area.
Importation: Some fuel might also be imported from the U.S., which also uses ULSD.
Legal Requirements: While not legally required everywhere in Mexico, the conversion to ULSD in Baja Sur has effectively made it the standard.
What does this mean for your vehicle?
No Need to Ask for ULSD:
You can confidently fill up at any Repsol station in Baja California Sur without having to specifically request ULSD or "UBA diesel".
Reduced Risk:
Using ULSD is important for vehicles with modern emissions control systems, as it prevents potential damage.
Is ultra low sulfur diesel available throughout Baja … | Facebook
27 ago 2023 — All diesel in the state of Baja California is ULSD, aka ultra bajo azufre aka UBA (15 ppm sulfur). All diesel in the st...
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lencho
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Quote: Originally posted by chippy  | | Refinery Upgrades: Local refinery has been upgraded to produce ULSD fuel, making it the only type of diesel available in the area.
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I'm confused; where is this "local refinery" that you're describing? 
Is this quote by chance the product of the Google Search AI function? I've caught it making major errors sometimes.
"I can normally tell how intelligent a man is, by how stupid he thinks I
am."
"...they were careful of their demeanor that they not be thought to have opinions on what they heard for like most men skilled at their work they
were scornful of any least suggestion of knowing anything not learned at first hand."
Cormac McCarthy, All the Pretty Horses
"Be kind, be patient, help others." -- Isabel Allende
"My gas stove identifies as electric." Anonymous
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chippy
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| Quote: Originally posted by lencho | | Quote: Originally posted by chippy | | Refinery Upgrades: Local refinery has been upgraded to produce ULSD fuel, making it the only type of diesel available in the area.
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I'm confused; where is this "local refinery" that you're describing?
Is this quote by chance the product of the Google Search AI function? I've caught it making major errors sometimes.
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Yes it was a cut and paste. I have seen uba in Repsol stations in Baja Sur.
OXXO Gas also claims it has uba diesel in all of it's stations in Mexico. I don´t know if OXXO Gas is in BCS?
[Edited on 8-26-2025 by chippy]
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lencho
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So much for A.I. 
Talking about BCS, that's like saying an El Paso refinery is "local" to Los Angeles. 
[Edited on 8-26-2025 by lencho]
"I can normally tell how intelligent a man is, by how stupid he thinks I
am."
"...they were careful of their demeanor that they not be thought to have opinions on what they heard for like most men skilled at their work they
were scornful of any least suggestion of knowing anything not learned at first hand."
Cormac McCarthy, All the Pretty Horses
"Be kind, be patient, help others." -- Isabel Allende
"My gas stove identifies as electric." Anonymous
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WestyWanderer
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Posts: 283
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Location: San Clemente, CA
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We’re caravaning with two other Ford trucks towing large 5th wheels so we’ll be going through multiple tanks of fuel while in B.C.S.
I appreciate the google search answers but I’m looking for first hand accounts of people running newer (2020+) diesels on B.C.S. fuel.
Thanks for the help so far.
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Don Jorge
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You ask for the last 5 years of model trucks and cannot help you there.
I have a 2011 F350 6.7. It requires ULSD, has the DEF system and still has factory exhaust regeneration system. It requires the same fuel, ULSD, as
newer models.
The big difference is in ULSD diesel fuel today vs then is the increased use of bio-fuels in the diesel blends today. That is actually a good thing as
the biofuel component increases lubricity which many feared was lacking in the original ULSD fuel.
I have used my truck for extended times in BCS burning through multiple tanks of BCS purchased fuels. Never had a problem and I still have the
original exhaust systems in place with over 340,000 miles on the odometer.
Its your truck and your call. There are RV forums where this subject is discussed thoroughly and the consensus is, well you can continue your search
for answers to your question and decide.
Personally I am not worried in the least about the availability of and using the UBA diesel in BCS. Good luck.
�And it never failed that during the dry years the people forgot about the rich years, and during the wet years they lost all memory of the dry
years. It was always that way.�― John Steinbeck
"All models are wrong, but some are useful." George E.P. Box
"Nature bats last." Doug "Hayduke" Peac-ck
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