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Diamond Diesel Service, Inc., Auto Repair & Service - Diesel, Oakland, CA

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Back To Fuel Additives> BIODIESEL

 

WE AT DIAMOND DIESEL ARE OFTEN ASKED ABOUT BIODIESEL AND ITS IMPACT ON DIESEL ENGINES. IF YOU ARE INTERESTED, HERE ARE SOME BASIC FACTS ABOUT BIODIESEL.

 

Advantages of biodiesel

  • Made from a renewable resource.
  • Almost no sulfur (in the biodiesel itself) .
  • Higher cetane value (51 min vs 40 min for mineral diesel).
  • Excellent lubricity.

Disadvantages of biodiesel

  • Could harm certain elastomers (seals) .
  • Has poor resistance to oxidation especially when blended with ULSD. This results in spoilage and the formation of acids and varnishes leading to corrosion issues.
  • Biodiesel can absorb much more water than mineral diesel leading to water separation issues
  • Has lower energy content

                        

 

Successful alternative fuels, fulfill environmental and energy needs without sacrificing operating performance. Operationally, biodiesel performs very similar to low sulfur diesel in terms of power, torque, and fuel without major modification of engines or infrastructure.


Biodiesel offers similar power to diesel fuel.

One of the major advantages of biodiesel is the fact that it can be used in existing engines and fuel injection equipment with little impact to operating performance. Biodiesel has a higher cetane number than U.S. diesel fuel. In over 15 million miles of in-field demonstrations biodiesel showed similar fuel consumption, horsepower, torque, and haulage rates as conventional diesel fuel.

Biodiesel provides significant lubricity improvement over petroleum diesel fuel.

Lubricity results of biodiesel and petroleum diesel using industry test methods indicate that there is a marked improvement in lubricity when biodiesel is added to conventional diesel fuel. Even biodiesel

levels below 1 percent can provide up to a 65 percent increase in lubricity in distillate fuels.

Compatibility of biodiesel with engine components.

The recent switch to low sulfur diesel fuel has caused most OEMs to switch to components suitable for use with biodiesel, but users should contact their OEM for specific information. In general, biodiesel will soften and degrade certain types of elastomers and natural rubber compounds over time. Using high percent blends can impact fuel system components (primarily fuel hoses and fuel pump seals), that

contain elastomer compounds incompatible with biodiesel. Manufacturers recommend that natural or butyl rubbers not be allowed to come in contact with pure biodiesel. Biodiesel will lead to degradation of these materials over time, although the effect is lessened with biodiesel blends. If a fuel system does contain these materials and users wish to fuel with pure biodiesel, replacement with compatible elastomers is recommended.

Biodiesel in cold weather.

Cold weather can cloud and even gel any diesel fuel, including biodiesel. Users of a 20 percent biodiesel blend will experience an increase of the cold flow properties (cold filter plugging point, cloud point, pour point) of approximately 3 to 5° Fahrenheit. Precautions employed for petroleum diesel are needed for fueling with 20 percent blends. Neat (100 percent) biodiesel will gel faster than petrodiesel in cold weather operations. Solutions for winter operability with neat biodiesel are much the same as that for low-sulfur #2 diesel (i.e., blending with #1 diesel, utilization of fuel heaters, and storage of the vehicle in or near a building). These same solutions work well with biodiesel blends, as do the use of cold flow
improvement additives.

 

MORE INFORMATION:

The web is loaded with information about biodiesel.  Use your search engine and you will get websites covering every aspect of subject. There is no point in re-creating this information.  Our purpose is to make sure that you understand that although biodiesel is operationally the same as petroleum diesel fuel, not all biodiesel fuel is created equal and unless you use a high quality biodiesel that meets ASTM standards there is no guarantee that biodiesel won't damage your engine resulting in costly repairs.

 

PLEASE CLICK ON THE FOLLOWING PAGES TO READ THE COMMON POSITION STATEMENT BY DIESEL FUEL INJECTION MANUFACTURERS REGARDING ALTERNATIVE DIESEL FUELS INCLUDING BUT NOT LIMITED TO BIODIESEL.

Fuels for Diesel Engines
Diesel Fuel Injection Equipment Manufacturers
Common Position Statement 2007

 

Fatty Acid Methyl Ester Fuels
As a Replacement or Extender for Diesel Fuels
Diesel Fuel Injection Equipment Manufacturers
Common Position Statement 2007

 

If you are looking for BIODIESEL, try the link below for mapquest.  Gas Prices from Map Quest will help you narrow down where you can get biodiesel and how much it costs.  The pull down list allows you to select either diesel or biodiesel.  Put in your zip code and you will get a least a partial listing of Diesel and Biodiesel filling stations.

                                      http://gasprices.mapquest.com/

 

 

Below are links to sites that we found to be useful in dispensing information about BIODIESEL.

 

 

 

 

 

 

 

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