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  #1  
Old 01-14-2020, 08:57 PM
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Is b20 fuel ok for 2005 cdi?

It seems like most stations in my hood r carrying b5 to b20 biodiesel

Is that safe for om648 cdi???

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  #2  
Old 01-14-2020, 11:14 PM
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I've driven mine on B20 several times. MB does not officially recommend more then B5 I believe.
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  #3  
Old 01-14-2020, 11:19 PM
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Quote:
Originally Posted by chronometers View Post
I've driven mine on B20 several times. MB does not officially recommend more then B5 I believe.

It seems like most Gas stations in Illinois are using b5 to b20
so is this going to kill this motor or injector system?
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  #4  
Old 01-15-2020, 01:05 AM
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If Mercedes recommends no more than 5 percent. Since they are not in the fuel business. It probably is wise to really think about exceeding it.

Bio diesel was a total disaster when sold in my region of eastern Canada. No fuel retailers will have anything to do with it since. It may have been how the product was manufactured and this was 10 years ago.

Since it was a major national chain that sold it up here in eastern Canada. They may have been on the hook for all the injection pump replacements.

Possibly the product today has to meet better standards for sale to the public. They may sell 5 percent up here but I know of no place to buy it regionally. In fact we have a product called premium diesel now. It costs about 8 cents more per American gallon. It is loaded with additives and increases fuel millage.

You cannot buy it everywhere in Canada or in many other countries. Yet usually there will be a station that also has it in the area you live in in Canada. It is not available in the United states anywhere so far.

The owner of a large America aftermarket parts supplier for Volkswagon. Was up here in Canada for a trip. He claims he used it and liked it.

I use it as it is full of detergents and the additional fuel millage pays for the possibly higher cost. Shell is the only supplier in my area. Esso also has it in a city 40 miles away. You can look it up on the net of where all the suppliers are across Canada.

Just because it is an Esso or Shell station does not mean they have it. Most will not. I have started to use it even in my older diesels. I did not even know it existed until I purchased a diesel Passat Volkswagon buyback for the wife. A few months ago. The dealer told me to use only it in the Passat and where I could buy it locally.

There was another change up here that bears some thought. Winter diesel was thinned with kerosene. Kerosene became expensive. So they started thinning it with other products for a few years. I think there was a problem with that. Now the winter fuel is thinned by the weather forcast by the month up here we are told. So if you are not driving a lot in the winter months here resist filing your tank. Until you know they will be reducing the amount of thinner added. Not during the time of the really cold months when they are steadily increasing the percentage.

We drive one diesel a lot. I think the millage is down about 5 miles per American gallon currently. This would be the time of year for the maximum amount of thinner in the fuel here. This change if true also means you cannot buy from low volume retailers. Or the fuel they supply is heavily thinned from the start of the season until warmer weather. This will hammer your fuel millage. The diesel tanker is at the shell station I use. Once a week on average. If not more.

I asked the station attendant. He told me that they are selling A lot of the premium diesel and the volume is steadily growing as well.

Incidentally the Passat is like a muscle car. I borrow it from the wife sometimes. . It is the first diesel I ever drove that I have never had the fuel pedal depressed much. The response seems instant and the power is simply amazing. Unfortunatly the engine system is far too complex. When the extended warranty with these buybacks is gone it will be too.

I believe the reason that Volkswagon paid owners so much more than their value to get them back. Otherwise most owners would have kept them. I got the title from Volkswagon Canada. They paid 29K to get it back in total. I was able to calculate that from the sales tax they paid.. It was on the title. We paid less than half of that all in.

Last edited by barry12345; 01-15-2020 at 02:51 AM.
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  #5  
Old 01-15-2020, 01:08 AM
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I wouldn't, there is no way of knowing the quality, and it doesn't take much to kill the fuel pump in a common rail diesel. Normal US spec diesel is bad enough for them lol.
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  #6  
Old 01-15-2020, 03:11 AM
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Last poster is wise. It the high pressure pump grenades. On the modern diesels the carnage can be really costly. Metal can get into the injectors. Price a set of them for sticker shock.
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  #7  
Old 01-15-2020, 07:00 AM
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Should not be an issue.
I have been running my 06 Jeep GC 3.0crd on b100 for at least 15,000 miles possibly more, it loves the stuff.

Look at it this way , if the fuel companies are putting up to 20% in then obviously its realistic to expect that 100% is going to be ok isn't it.
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  #8  
Old 01-15-2020, 07:33 AM
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well-- I finally pulled trigger on 2005 e320 cdi

Now I wil start paying attention to WHO is selling 100% diesel (if anyone is)...
and/or the B5 or less....

so far - every place I stopped-- says-- "B5 to B20 Blend"-- which is pretty damn vague

fyi-- I live in Dekalb , Il area... so if anyone can send details on stations in my area carrying B5 or Pure diesel... PLEASE do!

thx
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  #9  
Old 01-15-2020, 09:51 AM
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Also-- just noticed car ONLY got up to 50-60 C degrees... running 65 miles/hr for 30 minutes... outside 40 degrees F... seems like TStat-- is open??

is it safe to drive that cold? Short term?
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  #10  
Old 01-15-2020, 12:28 PM
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Quote:
Originally Posted by wallbenz View Post
Also-- just noticed car ONLY got up to 50-60 C degrees... running 65 miles/hr for 30 minutes... outside 40 degrees F... seems like TStat-- is open??

is it safe to drive that cold? Short term?
Sounds like bad T-stat, as long as it is not overheating, it is OK short term. Your fuel mileage will suffer though.

RE: fuel, a long term employee since 1968 at Bosch told me to only use "top tier" gas stations for fuel. He specifically mentioned BP and Sunoco as examples. You can probably google a list.
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'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991
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  #11  
Old 01-17-2020, 08:35 AM
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U need to goto to the truck stop areas of ur area.

That's usually where they got the good **** at
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  #12  
Old 01-18-2020, 09:52 PM
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I am driving two E320 diesels, a 2008 and a 2009. I do not use the biodiesel. MB says 5% max, fuel dispenser label says 5 to 20% so I do not purchase it. Many of the farmer cooperatives in Iowa have fuel stations that are open to the public and carry straight No.2 diesel fuel. These are unattended sales points, credit card only. Since I live on a farm and no local laws are involved, I installed a 500 gallon tank and purchase straight diesel fuel for my cars. They charge me $0.01 per gallon for delivery. I have found in the past that straight diesel is more available at convenience stores when traveling outside the farming areas.
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  #13  
Old 06-29-2021, 12:29 PM
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Quote:
Originally Posted by Murkybenz View Post
Should not be an issue.
Look at it this way , if the fuel companies are putting up to 20% in then obviously its realistic to expect that 100% is going to be ok isn't it.
Uh, no? Not at all? In what context does withstanding condition A mean a mechanism can withstand 500% of condition A?

If I can stand 95 degree heat then obviously it's realistic to expect that I can stand 475 degree heat??
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  #14  
Old 06-29-2021, 12:40 PM
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In Iowa I'm not sure you can find 100% petro diesel anymore. With all the lobbying by the renewable fuels industry I think we're in the same place as IL, with 5-20% and all the pumps marked that way.

My big concern is how this is dealt with in the winter. Most of my daily driving is in a VW TDI, which is old enough to not care about bio content levels, but in the winter it's known that bio gels at higher temps and I've been concerned about how much treatment I need to do and with what.

Anyway, will be interested in following this discussion.

Steve
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  #15  
Old 06-29-2021, 01:06 PM
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All this is probably another good reason to use an additive. Me? Opti-lube Summer+ April through October, XPD November through March.

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