For what its worth, I run my 606 on 1-2% soybean oil for the lubricity.

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CENSORED due to not family friendly words

Why is that do you think?

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"

Was it processed, proper biodiesel or straight veggie oil?

Also, since the bio retards the injection timing, I wonder if you were already running retarded (sorry) and the additional retardation (sorry again) of the bio made the engine run poorly.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

I ran biodiesel (not veg oil) in my 1995 E300 for 4 years with no problems other than replacing the return lines from injectors. B100 in the summer and as low as B30 in the winter depending on temps. Ran quieter and smelled better, maybe a small mpg decrease but not much. I even had a AMSOIL rep running tests on the engine oil every 2500 mi and was able to get over 10K mi between oil changes with a filter change halfway using the AMSOIL diesel blend.

If you have a alot of crud in your tank the biodiesel will loosen that up and clog the filter when you first start using it so always keep an extra on hand, I never had a problem with that.

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1995 E300 diesel

My '96 E300D ran on B100 for several years; when B100 got too expensive I switched to B20. The '95 E300D has been on mostly B20 since purchased 3 years ago. Both have had no problems beyond replacing some seals, o-rings, and injector return hoses to operate on B100. On B20 no changes are needed, in my experience.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I pump B20 into the humming machine (E300D) and sometimes B100 too if the pump is near - only 1 station in houston.

using bio initially resulted in dead acceleration after 600 miles, the issue was that the bio had cleaned out the tank and clogged the intank screen and also the primary and secondary fuel filters too.

I bought a bunch of O rings from an O ring/seal supply business (neighbors to my workplace). I later changed the DV O rings too - seeping issues (age related perhaps).

there is no difference IMO between how the engine performs on both fuels.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)