Using B5 (Biodisesel 5%) for 335d

hhkim · 10-02-2009, 09:55 AM

The manual says that if you use biodiesel, it must be 5% or lower. Whats the long term effect on the car if I keep using biodiesel vs. diesel? I understand there will be organic residue, but won't that just be burned off?

It's just that the closest gas station to me that I would use only has biodiesel and the next regular diesel station is a little farther away.

s__t__e__v__e · 10-02-2009, 10:25 AM

http://www.cleanmpg.com/forums/showthread.php?t=14973

Quote:

Currently, clean diesel cars from Mercedes and Volkswagen sold in North America only allow blends up to B5 under warranty. The reason is because manufacturers are concerned that high levels of biodiesel may dilute the engine oil when used in engines with certain emissions control systems. In those systems, fuel is injected after combustion, with the intention of having the fuel vaporize but not burn, then exit through the exhaust valves and travel down the exhaust stream to the particulate filter where it is used to incinerate the collected soot. Since biodiesel has a slightly higher boiling point than petroleum diesel, it will not vaporize as readily and may make its way into the crankcase and dilute the motor oil. Therefore, B5 was determined to be the limit for acceptable oil dilution levels in many new cars. Any biodiesel must be made to ASTM D6751 standards in order to be acceptable.

Is the pump clearly marked as biodiesel?

hhkim · 10-02-2009, 10:48 AM

Quote:

Originally Posted by s__t__e__v__e

http://www.cleanmpg.com/forums/showthread.php?t=14973

Is the pump clearly marked as biodiesel?

Yea, theres a huge biodiesel sign in green, but it doesnt list it at 5% on the pump. I only got that from online research of the gas station.

Coolieman1220 · 02-03-2011, 03:53 PM

I believe you will get less miles per gallon and your oil gets contaminated faster so shorter change intervals would be required.

3lusive · 02-03-2011, 10:34 PM

Quote:

Originally Posted by wallstreet

Folks,

There are some discrepancy here. My fuel cap clearly states that max B7, so 7% or less is acceptable.

Lol, that confuses me a bit. "NO BIODIESEL, but in case you do it has to be 7% or less."

Philm35 · 02-03-2011, 10:38 PM

BMW bumped the limit to B7 from B5 a year or two ago.

10-02-2009, 09:55 AM	#1
hhkim Lieutenant 40 Rep 481 Posts Drives: '10 335d Join Date: Oct 2006 Location: LA iTrader: (0) Garage List 2006 325xi [0.00]	Using B5 (Biodisesel 5%) for 335d The manual says that if you use biodiesel, it must be 5% or lower. Whats the long term effect on the car if I keep using biodiesel vs. diesel? I understand there will be organic residue, but won't that just be burned off? It's just that the closest gas station to me that I would use only has biodiesel and the next regular diesel station is a little farther away. __________________ MY10 335d: Montego Blue, Oyster/Black Leather, Aluminum Trim, Navi, ZSP with Paddle Shifters, ZCW, Alarm Order Placed: Aug 15th, In Production: Sept 1st, At Port of Exit & Awaiting Transport: Sept 15th, Sept 16th, At Prep Center: Oct 7th, Released to Carrier: Oct 22nd, Delivered: Nov 11
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02-03-2011, 03:53 PM	#4
Coolieman1220 Banned 73 Rep 1,770 Posts Drives: 2010 335d Join Date: Jul 2010 Location: New York City iTrader: (0)	I believe you will get less miles per gallon and your oil gets contaminated faster so shorter change intervals would be required.
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02-03-2011, 10:38 PM	#6
Philm35 Private 0 Rep 88 Posts Drives: 2011 BMW 335d Join Date: Aug 2010 Location: Cincinnati, OH USA iTrader: (0)	BMW bumped the limit to B7 from B5 a year or two ago. __________________ 2011 BMW 335d•Space Gray/Black•Sport•Premium•Convenience•Cold Weather•Nav•HK•iPod
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