Biodiesel?
I've heard mixed reviews about newer models.
Agreed that the manual says no more than B5, but I have been to many other countries where they don't even have ULSD, or run higher bio content, and these CDI's are running around daily quite happy. Go figure.
Wait, what exactly are you running in your fuel system? Drain cleaner?
PLEASE PLEASE show an ACTUAL instance where this has happened because of the use of a commercially available diesel fuel higher than B5.
I would really love to see how fuel lines rated to handle pressures in excess of 20,000PSI would "melt" because of using higher Bio content diesel.
You should tell this info to CDI owners I have met in the Caribbean that run whatever diesel they can get/make. Amazing that they are still running strong... And mine also, I have run B20 in mine on several occasions, and since then put over 40000 miles without an incident. No "melting" or pump/injector "killing" here.
To the OP, if the vehicle has a Diesel Particulate Filter, (DPF) then you run the risk of damaging that part if you use higher than B5, according to MB's warranty brochure.
Not the case. Mercedes and others use post injection to get diesel fuel into the exhaust stream to regenerate the DPF. The post injection is the reason for limiting biodiesel to 5%. http://biodieselmagazine.com/article...ction-problem/
Last edited by b4black; Mar 4, 2011 at 11:46 PM.
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Diesel is an oil. Biodiesel is a solvent.
FYI, very little of the fuel system sees high pressure. The rest of the system uses plastic and rubber hoses at pressures under 30psi.
The Best of Mercedes & AMG
Here in Illinois, most stations sell B11 for the last five years and our diesel cars & trucks run just fine.
Last edited by b4black; Mar 6, 2011 at 09:35 PM.
If your car was sold there surely you can buy the correct fuel for it.
A little research may be required.
Good luck.
I've got over 30K miles on mostly B100 in my 1995 E300D
biodiesel when used as an additive boosts lubrication and cetane. It has 8% less BTU per gallon and in cold weather suffers from gelling at higher temps.
Petrodiesel is disgusting toxic fuel. Flame away
Some of us do what we can to have less of an impact on our environment. Some of us don't and try to insult others who make an attempt


I did get to see how Bio Diesel melted the hose on the pump at the station.
I had to have special seals put in the injection pump and I replaced the return fuel lines as they where getting soft.
The biggest problem with Bio Diesel is Quality Control.
Common Rail Diesel Injection will not last with a marginal fuel and with no set standards on Bio Diesel its a crap shoot.
I used Bio Diesel for almost 60k all from the same place and then got a bad batch plugged the fuel filter ran bad.
After that it was hard to trust.
I still use it but no more that B10
Last edited by 2slowcdi; Jul 9, 2011 at 03:40 PM.
I'm talking about B100 fuel not say B5 , B10 , or B20 that will soften filling station pump hoses.
Also for every gallon of fuel source that it takes to make bio diesel you get three gallons back so you are two gallons to the good.
Last edited by 2slowcdi; Jul 11, 2011 at 09:31 PM.
Clean, green, renewable, and the fuel is free....Hard to beat that
It burns dirty, has higher NOx emissions and drastically reduces your engine lifespan. So much for clean.
It takes a lot of diesel to farm the base product, people get very fat consuming the food it cooks. So much for "green".
It takes more diesel to farm, process and transport the grease than you get out of it in your car. So much for renewable.
Companies recycle the grease to be used in products and burners designed to run on grease, which means you're stealing. So much for free.
Any questions?







