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Old 05-02-2006, 06:09 PM
pberku's Avatar
Registered User
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Below is the reply I just received from Mercedes Benz - Canada, in response to my original question concerning the low sulphur diesel fuel due October of this year:
Thank you for your interest in Mercedes-Benz. Please note the 15 ppm is
expected to be fully compatible with most vehicles. A small number of
vehicles may require preventative maintenance in the form of upgrading
certain engine and fuel system seals that may not perform well with the new fuel. It is anticipated that only a very small fraction of vehicles will
be affected, primarily older (pre-1993), high mileage vehicles with original seals still in place. Please review your maintenance records to ensure that fuel system seals have been changed with recommended parts at recommended intervals. If the seals are original, we would recommend
having them inspected by an authorized Mercedes-Benz service facility,
prior to the new 15 ppm fuel becoming available.

Best regards,

Erin Somerville
Customer Relations Co-ordinator
Mercedes-Benz Canada Inc.
smart Division Canada

'95 E300 Diesel, 264,000 Miles. [Sold it]
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Old 05-02-2006, 09:19 PM
deniss's Avatar
'84 300SD W126/OM617
Join Date: Apr 2006
Location: Central NJ, USA
Posts: 452
oh that's "swell" news... what about biodiesel? does it have any effect on seals?
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Old 05-02-2006, 11:47 PM
superbeast1098's Avatar
Join Date: Jan 2005
Location: Atlanta, Ga
Posts: 210
Originally Posted by Craig
Thanks nhdoc,

It's good to have some actual info. There may be lot's of good reasons to use BD and/or veggie oil, but this isn't it. At the end of the world, about the only things left alive will be cockroaches and my 617 injection pump. It will still outlive me, the rest of the car, and western civilization (probably in that order) with or without ULSD.

That reminds me of something I read on this site quite a while back. It was something like "When humans cease to exist and cockroaches aew 6 feet tall, they will be driving these diesel Mercedes"

I dont remember who posted it, but it was funny though
1983 Mercedes 300D
Atlanta, GA
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Old 05-02-2006, 11:50 PM
superbeast1098's Avatar
Join Date: Jan 2005
Location: Atlanta, Ga
Posts: 210
Personally, Im not going to really worry about it too much. I can understand using a fuel additive every once in a while, but I wouldnt use them on a regular basis with the new ULSD fuel.
1983 Mercedes 300D
Atlanta, GA
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Old 05-02-2006, 11:58 PM
wolf_walker's Avatar
Zen And The Art Of Diesel
Join Date: Dec 2003
Location: Oklahoma City
Posts: 2,050
This is I believe the first time in my entire life I've ever been even slightly relieved to be driving a gas engine car..

I bet injection pump rebuild sales go up in the next few years, and lots of good deals on dead cars too..
One more Radar Lover gone...
1982 VW Caddy diesel 406K 1.9L AAZ
1994 E320 195K
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Old 05-03-2006, 03:39 AM
phasmatisnox's Avatar
Crazed engineer
Join Date: Feb 2006
Posts: 126
I wonder if a $2/qt bottle of vegetable oil will be a good lube- probably 1/2 bottle per tank. Strikes me as much cheaper than motor oil, if you buy new motor oil.
1984 300D Turbo Diesel - 211700+ mileage (now sold)
In any of my posts, it is safe to assume
that I'm talking about this car.
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Old 05-20-2006, 02:07 PM
Registered User
Join Date: Aug 2005
Location: central washington
Posts: 52
The best way to restore lubrication would be to add a lead based additive.Probably not too environmentally friendly though.
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Old 05-20-2006, 08:42 PM
Lost in the "O" Zone
Join Date: Sep 2005
Location: NC Oklahoma
Posts: 77
ULSD has to meet a lubricity requirement, an additive has to be added at the delivery point just prior to loading on a delivery truck. I really don't think it is a concern if you use one of the many additives that are out there.
Just my .02
Habits I support
95 E300 D 220,000 & counting (I think I'll call him Fritz)
02 Tahoe (Momma's ride)
98 GMC Sierra 120,000
57 Chevy Nomad (bought in '69)
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Old 05-20-2006, 08:44 PM
Panzermann's Avatar
How did I get here?
Join Date: Mar 2006
Location: Arizona
Posts: 232
Originally Posted by deniss
It's ok to just put a little regular motor oil in the tank? Doesn't really matter which? Wonder if that will increase smoking...
In my limited experience, even a little contamination with motor oil will increase your smoking.
Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"
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Old 05-20-2006, 09:24 PM
Jadavis's Avatar
Registered User
Join Date: Oct 2005
Location: Tennessee
Posts: 995
Originally Posted by pawoSD
Essentially it just has lower sulfur, so lubrication properties of the fuel will go yet lower, so it may be a good idea to use a bit of fuel additive on each fillup
Or you could always use 2% biodiesel as your lubrication additive. Works wonders.

1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.
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Old 05-23-2006, 10:05 AM
Registered User
Join Date: May 2006
Posts: 8
Originally Posted by deniss
oh that's "swell" news... what about biodiesel? does it have any effect on seals?
From what I've read, 100% biodiesel can degrade the natural rubber seals and fuel lines in older cars. If your car is newer than '94 that isn't an issue, since those components are synthetic. I'm also fairly certain B20 doesn't cause those kinds of issues.
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Old 05-23-2006, 01:46 PM
rg2098's Avatar
Detailing Moderator
Join Date: Jun 2004
Location: Rochester Hills, MI
Posts: 2,415
Originally Posted by beerdavis
...According to the veteran MB DIY Marshal Booth, these pumps were even used in some gassers which has no lubricative properties at all.
The old fuel injected [MB] 300s of the 50's and 60's had injection pumps very similar to our diesel ones. They are lubed by the engine oil and the plunger bores are fine with gasoline which is a solvent and not an oil in the first place.

Adam Lumsden
(83) 300D
Vice-President of the MBCA International Stars Section
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