Biodiesel % in CDI
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From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
Biodiesel % in CDI
Has any diesel drivers out there used higher than the 5% biodiesel that Mercedes recommends? Or know of someone that has?
Just curious as to what happened if anything. I did hear Willie Nelson used 100% on his, but that was an 06 E class, and I am not sure if that has the emissions stuff the 2007 and newer ML. Overseas info welcomed also.
Just curious as to what happened if anything. I did hear Willie Nelson used 100% on his, but that was an 06 E class, and I am not sure if that has the emissions stuff the 2007 and newer ML. Overseas info welcomed also.
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2007 ML320 CDI
That being said, you can't find anything more than B zero where I live so it is a moot point.
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From: Albuquerque
'10 CL550, '12 GL550
One suspects MB engineers can identify damage caused by incorrect fuel--whether there's any in the tank at the time they first see the car or not. Whether it's biodiesel or water in the fuel, you'll see the same result--no warranty coverage.
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From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
Fuel is fuel. How can it damage something? As long as it has none of the sulfur and meets the ASTM standards, what can go wrong? Biodiesel lubricates better, and burns cleaner. All the car does is pump it and inject it. They all have the same cetane rating. Just want to know if anyone has tried it and how it felt power wise, if anything smells different or if any mileage change?
There must be someone out there that has tried B10 or even B100 that they made themselves... If not, once I get the ability to make my own, I guess I will be the first. Even at 30MPG, $4.00 a gallon still stinks!
There must be someone out there that has tried B10 or even B100 that they made themselves... If not, once I get the ability to make my own, I guess I will be the first. Even at 30MPG, $4.00 a gallon still stinks!
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ML 320 CDI
I recently bought a 2008 ML320 CDI and was filling it up for the first time the other day at a station that sells b20 in the winter and b100 in the summer. I went there with the intention of filling it up with b20, but after about 4 gallons I started to get scared that it might muck up my exhaust or engine on my brand new 50k car. So I stopped after 4 gallons and put regular ultra-low sulfur diesel in for the remaining amount.
Next time I think I will go for it, but I sure would like to hear from someone who has put it in.
Next time I think I will go for it, but I sure would like to hear from someone who has put it in.
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Joined: Dec 2007
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From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
Macrophyllum, has there been any issues, or did it run fine? Any mileage difference? Post an update please when you get a chance... Also what was the price of the B20 if you remember?
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ML 320 CDI
I don't recall the exact price, except that it was about 0.05 more expensive the regular diesel. The next time I fill-up I'll post more details.
Has no one really filled up with b20 before? Will I be the first
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ML 320 CDI
I filled her up with B20 and drove about 600 miles. Everything worked fine. I didn't notice any difference in engine noise or fuel economy, but that might be because it was only my second time filling her up 
.
I filled her up again yesterday, but with regular ultra low sulfur diesel.
So in summary, B20 was
.
.I filled her up again yesterday, but with regular ultra low sulfur diesel.
So in summary, B20 was
.
Thread Starter
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From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
As I thought. If I happen to find some thats reasonably priced, I will pump away also... Thanks for keeping us informed.
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From: MADRID-SPAIN
ML 320 CDI 4 MATIC AMG
I recently bought a 2008 ML320 CDI and was filling it up for the first time the other day at a station that sells b20 in the winter and b100 in the summer. I went there with the intention of filling it up with b20, but after about 4 gallons I started to get scared that it might muck up my exhaust or engine on my brand new 50k car. So I stopped after 4 gallons and put regular ultra-low sulfur diesel in for the remaining amount.
Next time I think I will go for it, but I sure would like to hear from someone who has put it in.
Next time I think I will go for it, but I sure would like to hear from someone who has put it in.
Any questions e-mail me at biodiexel@biodiexel.com
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'90 300D
I make my own biodiesel and have added a 1/4 of a tank from time to time. No difference. I think the main concern of the manufacturers is bad homemade biodiesel and emission requirements. The manufacturer probably needs to test the engine to see if it meets emission requirements at any biodiesel concentration it recommends. It would be expensive to test at several different concentrations that few owners use. Too much cost and not much gain for the manufacturer.
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2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
The question isn't really one that can be answered in the short term. The question is what long term effect will the greater concentrations of Biofuel have. MB has extensively tested with B5 and less and is confident that the failure rate with that fuel is acceptable over the long term. No one has tested higher concentrations for a length of time that could be considered definitive. Will it run? Sure. Will you have any long term issues? Who knows. I think VW, Audi, and BMW rescinded their < B5 requirement specifying only to check the oil level at regular intervals and to change it if it begins to rise as this would indicate contamination of the oil with fuel.
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2008 R320 CDI, 2006 smart fortwo cabrio, 1983 240D, 1982 300SD, 1980 300SD
It all has to do with the post injection cycle to heat up the DPF, in other words the regeneration. Biodiesel sludges oil, they don't mix. All modern Mercedes diesels have a post injection cycle to run the DPF regeneration so fuel is on the cylinder walls and gets past the rings into the oil. It causes the oil to sludge over time, hence the 5% limit. It will not show up in the near term, and with frequent oil changes/driving conditions that keep the regenerations to a minimum likely would never happen during one's ownership, but it could happen and has to some.
How Mercedes can get around warranty issues in states that have a higher biodiesel concentration I have not read yet or if it is an issue yet.
How Mercedes can get around warranty issues in states that have a higher biodiesel concentration I have not read yet or if it is an issue yet.
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08 ML 320 CDI
It all has to do with the post injection cycle to heat up the DPF, in other words the regeneration. Biodiesel sludges oil, they don't mix. All modern Mercedes diesels have a post injection cycle to run the DPF regeneration so fuel is on the cylinder walls and gets past the rings into the oil. It causes the oil to sludge over time, hence the 5% limit. It will not show up in the near term, and with frequent oil changes/driving conditions that keep the regenerations to a minimum likely would never happen during one's ownership, but it could happen and has to some.
How Mercedes can get around warranty issues in states that have a higher biodiesel concentration I have not read yet or if it is an issue yet.
How Mercedes can get around warranty issues in states that have a higher biodiesel concentration I have not read yet or if it is an issue yet.
MB would not ship new diesels to Illinois for a couple of years because the state forces >5% biodiesel on their citizens. Just recently MB started shipping again and the explanation was that they were going to bite the bullet on warranty costs. They may require oil/filter changes more often but not sure of that.
