Added a 16-oz bottle of 2-cycle oil to a full tank on the SD, and it works for me! After about 50 miles of driving, the car is quieter at idle, and seems to be getting better fuel economy (we'll see). But it is DEFINITELY quieter at idle. I'm still using the old 500ppm fuel, so I only added 16 oz as opposed to the prescribed 1 oz for each gallon.....When I start using the ULSD, I'll add a greater concentration!

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2015 E250 Bluetec Black/designo Sand
2014 GLK250 Bluetec Iridium Silver/Almond
1999 E320 Sedan Bordeaux Red/ Parchment
1999 E270CDI Estate Black Opal/Black
1983 300SD Champagne/Palomino Leather
1982 300SD Silver Blue/ Pacific Blue Leather

I add some but did not notice any differance. However, I had left over 2 stroke oil and it gave me something to do with it. Since is is supposed to reduce the "wear scar" even if it dose nothing noticable it is a good thing.
See post #13 for cart Spicer Lubricity Test. The shorter the blue bar on the chart means less "Wear Scar".
http://www.peachparts.com/shopforum/showthread.php?t=203315&highlight=stroke+oil

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84 300D, 82 Volvo 244Gl Diesel

Placibo affect. Our IP's are lubed by engine oil, so I don't see what would benifit. The injectors certianly don't care, nore does the lift pump.

You are already runing ULSD unless you havn't bought it from the pump in the last 12-18 months.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Well, I don't know if its physically doing anything to the vehicle, (IP or anything else), but it has made it quieter, and seems to be getting better fuel mileage. And I promise, I am not buying ULSD...remember it is not MANDATORY until 2010....Also, bear in mind I'm currently in a place where I could pull up to the Agricultural diesel pump and fill up w/ no questions, (if I wanted to do that)....I just bought the old 500ppm diesel on Sat....

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2015 E250 Bluetec Black/designo Sand
2014 GLK250 Bluetec Iridium Silver/Almond
1999 E320 Sedan Bordeaux Red/ Parchment
1999 E270CDI Estate Black Opal/Black
1983 300SD Champagne/Palomino Leather
1982 300SD Silver Blue/ Pacific Blue Leather

Chances are very likely you are getting ULSD no matter what the pump says. 80%+ of the diesel produced is ULSD.

The parts of the pump that are immersed in diesel fuel can't be lubed by the engine oil. They are also the very parts that raise the fuel pressure all those bar for the injectors and therefore have very close tolerances.

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'83 300DTurbo http://badges.fuelly.com/images/smallsig-us/318559.png

Broadband: more lies faster.

Well apperantly ULSD doesn't bother them since its been around quite a long time now and is hardly mentioned anymore.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Nothing like a scientific analysis of the situation!!!

If it really was a problem we would be seeing far more pump failure reports.

It continues to amaze me that people who are fearless about running used motor oil, and God knows what through these things, worry about ULSD.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

At this point, I probably have about 80K miles on ULSD without additives (I installed a reman IP just about the time ULSD came out).

All of the pumps down here with the exception of like 5 have LSD and not ULSD yet. Sticker on the pump indicates what the fuel is and its obvious by looking at it when it comes out of the nozzle. When i run ULSD in my truck i can tell. There is a significant drop in MPG. I guess it depends on what part of the country you are in. Pumps down here that sell ULSD are generally 10-20 cents a gallon higer than the others.

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Between our cars we probably have 45-50k on ULSD....with 25-30k of that being on my car. Runs fine.....sometimes I add some cetane booster and it does smooth it out, but thats likely due to better combustion, not better lubrication.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

There is some misconception here. The camshaft, rollers,cam followers, the rack, govenor and the lower part of of the plunger are lubricated by the engine oil.
The part of the plunger and barrel assembly that creates the high pressure fuel for the injectors is only lubricated by the Diesel Fuel or good or bad what ever is in the diesel fuel.
There was a chart that had the Walmart brand 2 strok oil as being I believe it was 3rd best at reducing the wear scar on the Plunger and Barrels of the IP. I am not one to follow a chart simply because someone shows up with one but I had the 2 stroke oil left over so I said why not use it. If someone is interested in looking for the chart do a search for 2 stroke or 2 cycle oil and fnd it.

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84 300D, 82 Volvo 244Gl Diesel

It is too soon to tell. Also inline fuel injection pumps are the toughest of the type IPs out there. The rotary pumps like the Stynadyne (Roosamaster) pumps will be the most effected, 2nd would be CAV rotary pumps (though these pumps hold up better then the Stynadyne ones), and the toughest of the rotarys Bosch Ep/VA, VE and Vps.
I CA where I am they have to sell the newer fuel and after 6 months drive shaft seal started leaking on my Volvo diesel with a Boach VE rotarys pump. This pump is similar the VW rabbit pump and VW Rabbits and other older vehicles that use the pump had a rash of leaking pumps. There is at least 2 sellers on Ebay that have a business selling the gasket kits to reseal these pumps due to the leaks.
While the newer fuel will shorten the life of the IPs it probably will not be noticed until many hundereds of thousands of miles have passed.
If you have noticed the leaking IP "O" threads you are probably seening the results of the newer diesel fuel.
Luckly the Mercedes inline fuel injeciton pumps do not have many seals to replace on them.
The newer seal kits are supposed to be made with the new diesel fuel inmind.

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84 300D, 82 Volvo 244Gl Diesel