Rosario PEMEX station; you can find his posts on the forum at
www.BajaNomad.com) is that Baja norte is getting ULSD deliveries from
Pemex, but not Baja Sur (south of the 28th Parallel). Don't know if
that is true; that's what BC reported in a letter to the editor of the
www.vagabundos.com monthly newsletter.
We entered Baja w/our new 08 coach about 10/12/07, and topped off
tanks in Guerrero Negro just above 28th parallel next day. Stayed in
Mulege for a month. Heading back we fueled in San Quintin w/enough
fuel to get us to Tecate & back to ULSD. Filled w/95 gallons near San
Diego.
During the return trip I noticed a soot plume on the coach paint
behind the tailpipe. 200 miles after filling on ULSD, the High
Exhaust Temp Light came on for about 20 minutes, then off. The
engine's computer sensed soot build up in the Particulate Filter of
the 07+ emissions system that is exclusively on the new engines
(pre-07 engines, and therefore virtually all 07 and before coaches
don't have this system and therefore don't have the ULSD requirement),
and ran a regeneration cycle on the PF (runs exhaust temp in the PF up
to 1100 degrees to gasify the soot particles & clean the filter).
After the regen, the soot plume didn't get any darker in the next 350
miles.
Before we bought the 08 coach I consulted w/the Cummins tech reps at
Cummins Northwest in Yakima, WA and at the Redmond FMCA rally. I was
told that a few loads of LSD wouldn't have a noticable effect, tho a
somewhat steady diet of LSD might reduce the lifespan of the PF
significantly (they couldn't quote a part cost but estimated about
$5k). Whether forced regeneration of the PF would help was not
assured but I got speculation it might; your Cummins shop (and I
presume Cat as well) can run a "manual regen" on the PF using their
diagnostic computer setup liked to your engine's computer to clean out
the PF while the rig is parked. I bought the software, pigtail wire,
etc., and was intending on running the regen myself when we got home,
but the engine's onboard sensors/computer beat me to it. There's
$1,200 shot in the butt.
I don't think you will have any problems in Baja with the 2.3 or so
fuel loads you will need to add there for a full peninsula trek to
Cabo & back. You may see the High Exhaust Temp light come on while
driving. Cummins advice if you do: "enjoy the next 20-40 minutes of
driving while the computer cleans out your PF automatically; don't
stop unless you have to as the computer will abort the regen & restart
it later when steady driving is sensed. If the light doesn't go off
after 45 minutes or so, have the engine serviced; there will be code
data & historical data stored by the ECU for the tech to retrieve."
IIWM and there was an idiot light issue, I'd run the Baja fuel down as
low as comfortable (my fuel light comes on w/about 20 gallons still in
the tank, YMMV) and fill up full w/ULSD before the service.
If you have a Cat, you might want to check w/the regional Cat center
to assure their stuff works the same, or what you would need to know
that is different.
Hope this helps, Mike
--- In Diesel-RVs@yahoogroups.com, "kevinkercher" <kevinkercher@...>
wrote:
> Does anyong know if ULSD is available in Mexico heading to Cabo San
> Lucas? I understand El Rosaria has ULSD but that's 600 miles from
> Cabo. I can only go 900 miles on a tank. That's not enough for the
> return trip. Any ideas?
> Kevin
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