Problems with 2007 up, low sulfur fuel. All by 2010. - PeachParts Mercedes-Benz Forum

dkveuro · #1 07-07-2006, 12:07 PM

I am looking for definitive information on the latest fuel, sulfur levels.
I am getting customers ( With Dodge Cummins.) ...asking why they see labels on fuel pumps that say " Not to be used in 2007 or later vehicles."

I have read the latest EPA papers, but am finding no commentary from the vehicle makers.
I have reassured those of them with the old inline diesel pumps on the up to 1996 Cummins that this is fuel they can use without problems.

Apparently manufactures will decline warranty claims if the 2007 up engines have been run on regular diesel fuels.

Bosch and Dodge seem to have little or no info' on the sulfur levels. What they do have to say is very non committal.
Dodge say the later V44 pumps where supposed to run on low ppm fuel and Bosch says they don't have any problems to report.

The inline I/P on the Mercedes is an 'all fuel ' pump and when I go to Europe there are thousands of diesels on 1990 and earlier running just fine on
very low sulfur fuels.

So if anyone has a link or two that addresses this problem in depth I should be very grateful as will my customers.
Up to now, I have checked all the 24 valve engines for correct fuel pressure, pressures below 8 psi is the reason V44 pumps die.
( actually...the electronics over heat and fry with low fuel flow through the pump...bad lift pumps and restricted tank pick up is major cause. )

dk.

.

Tomlinson · #2 07-07-2006, 01:17 PM

ULSD is being intorduced at the refiner level now and will be at the retail level by oct 1. The 2007 models have pollution controls designed to work with ULSD. High suplhur diesel will plug these pollution control units.

Thank you
Gary Tomlinson
Agri-Green Biodiesel Inc.
Sparwood, B.C. Canada
250.425.0777

dkveuro · #3 07-07-2006, 01:52 PM

Thank you Gary....I understand the plugging of the particulate traps on newer vehicles.

Is the aromatic reduction still being going to be a problem for older I/P seals ?

.

F18 · #4 07-07-2006, 01:53 PM

As Gary said all 2007 models have pollution control systems designed for the new ULSD (15ppm sulfur) use only. Cars sold in Europe already have had this system in place because of their strict fuel & emission regulations over there.

Older diesels (prior to 07) can run on anything, LSD (500ppm sulfur), ULSD (15ppm), Off Road/Farm Diesel (+1500ppm sulfur). They are just trying to educate the consumer with the pump stickers. Its similar to the transition of gasoline from leaded to unleaded back in the early 70's. You needed to know what fuel your vehicle was designed for. If you ran a newer unleaded 70's vehicle, with a cataliytic converter on the old leaded fuel you stood a big chance of ruining or clogging the catalytic converter. The same applys to the newer 07 diesels emission systems which were designed to function on the new ULSD fuels only.

What I am curious about is if these systems on 07 models will be alright with BioDiesel / ULSD blends??

Maroon 300D · #5 07-07-2006, 01:56 PM

If I fill my car up with LSD will I crash into a pink elephant?

yucka yucka yucka

F18 · #6 07-07-2006, 02:05 PM

Quote:

Originally Posted by Maroon 300D

If I fill my car up with LSD will I crash into a pink elephant?

yucka yucka yucka

No....but probably a rainbow of melting crayons! As J. Hendrix once sang "Are you Experienced?"

Mismost · #7 07-07-2006, 03:21 PM

If I fill my car up with LSD will I crash into a pink elephant?

yucka yucka yucka

What a rip off! WHERE ARE THE FLASH BACKS THEY ALL TOLD US WOULD COME?
Jimmy Buffett said that.

boy, this thread took a drug related nose dive.

deuce · #8 07-07-2006, 03:28 PM

I love this website! I actually took this picture last night to post today because I was confused about the stickers as well. What I gather from the posts is that the diesel fuel we've been using to this point is LSD and the stickers aren't indicating a new fuel but are clarifying the existing fuel so we'll be edumacated when ULSD is released in the fall...right

85chedeng300D · #9 07-07-2006, 09:16 PM

does anyone know how these ULSD fuels will affect the performance and efficiency of our old mercedes diesels? is it beneficial or no effect? from what i have read in some auto magazine article, that european diesel fuel are the best kind of diesel you could ever find in the world and what US diesels like what were burning, is said to be also known as "dirty diesel". so, if the ULSD fuel which has euro specs on it, and will be introduced to the US, what are its advantages aside from environment and air friendly?

F18 · #10 07-07-2006, 09:47 PM

Quote:

Originally Posted by 85chedeng300D

does anyone know how these ULSD fuels will affect the performance and efficiency of our old mercedes diesels? is it beneficial or no effect? from what i have read in some auto magazine article, that european diesel fuel are the best kind of diesel you could ever find in the world and what US diesels like what were burning, is said to be also known as "dirty diesel". so, if the ULSD fuel which has euro specs on it, and will be introduced to the US, what are its advantages aside from environment and air friendly?

It is a cleaner burning fuel so you would have to assume that there would be less coking / carbon build up in the engines. Other than that I would not expect any drastic changes in performance, maintenance or economy. It was not that long ago that we went from +1500ppm sulfur diesel to 500ppm LSD...and yes everyone at the time (mostly truckers) argued that the 1000ppm drop in sulfur was "going to destroy their engines" Guess what..nothing happened!
I did not notice any detrimental change in any of my own diesel cars at the time.
Its just that no one likes change or to deal with something new. But its not NEW! Ultra Low Sulfur Diesel has been used in Europe for years in all diesels old and new with no crazy problems...

pleiades · #11 07-07-2006, 10:17 PM

ULSD isn't as good a lubricant as LSD, which may or may not make a difference, if you are concerned, blend with biodiesel at a low percentage such as B2.