Bio-Diesel ? Bruce

[Capt. DQ]

Bruce,

Would you still use a additive if the Bio-Diesel supplier was selling a pure palm oil or soy bean oil Bio-D, suppose to be free of contaminats and you were also using Alge-X units.
Thanks,
DQ

[Bruce]

I would contact the additive maker first and ask if there is any compatability problem between the two.
If no problem I would use it.

[Rawleigh]

Most additives are not formulated for use with Bio. Like Bruce said check on it. I think that Power Service may make one. Biocide should be all that you need, as bio has built in lubricity.

[Capt. DQ]

Thanks for the input. This Bio-Diesel smells like French Fries cooking which is better than the usual.
DQ

[Bruce]

Here is some info from stanadyne on using their additive with bio-diesel and some alternative fuel info.

http://www.stanadyne.com/new/ppt/showfile.asp?id=2498

http://www.stanadyne.com/new/ppt/showfile.asp?id=2499

Ultra Low Sulfur Diesel

Beginning in 2006 diesel fuel for on-highway
use must have no more than 15 parts per
million sulfur. This is a 97% reduction from the
previous limit of 500 ppm. Sulfur is removed
from diesel fuel at the refinery by a process
called hydro-treating which also affects the
fuel in other ways.
The American Society for
Testing and Materials (ASTM) publishes the
standard for mineral diesel fuel—ASTM D975
which the refineries comply with.

Advantages of ULSD
+ Reduced exhaust emissions
+ Improved cold startability and reduced white
smoke at cold startup

Disadvantages of ULSD
− Higher Cost
− Lower energy content. Less BTU’s per
gallon means reduced power and fuel
economy

− Possible premature fuel system wear. The
process of removing sulfur can also reduce the
natural lubricity of the fuel. There is now a
lubricity specification in the D975 standard but
it is not as high as what the fuel system
manufacturers recommend.

− Compromised fuel stability. ULSD tends to
be less stable and will deteriorate sooner than
the previous diesel spec.

− Fuel System leaks. Reducing sulfur also
reduces aromatics. This can result in rubber
seals an hoses in some fuel system
components shrinking and resulting in fuel
leaks. NOTE: Stanadyne fuel systems do not
use natural rubber seals but use Viton® seals
instead

Bio-Diesel
In addition to petroleum, Diesel fuel can also be
made from various vegetable oils including
Canola and Soybeans.

The ASTM also has released a standard, D-6751 for bio-diesel fuels.
Stanadyne as well as the other major fuel
injection equipment manufacturers have
determined that a blend of 5% bio-diesel that
meets the ASTM D-6751 standard and 95%
mineral diesel that meets the ASTM D-975
standard should not harm fuel system
components.

This blend is referred to as B5. As
with ULSD, bio-diesel fuel also has various
advantages and disadvantages including:

Advantages of bio-diesel
+ Reduced exhaust emissions
+ Made from a renewable resource
+ Almost no sulfur (in the bio-diesel itself)
+ Higher cetane value (51 min vs 40 min for
mineral diesel)
+ Excellent lubricity

Disadvantages of bio-diesel
− 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
− Bio-diesel can absorb much more water
than mineral diesel
− Has lower energy content



Stanadyne’s Performance
Formula all season fuel additive:

�� Lubricates fuel system components to help
prevent wear caused by low lubricity fuels

�� Increases cetane value help starting,
reduce smoke, increase power and fuel
economy.

�� Provides cold weather protection by
reducing the fuel pour point by up to 40° F
(22 °C)

�� Helps to “de-mulsify” water so that the
water separator can work more effectively.
Stanadyne additives do not contain alcohol
which can emulsify water into the fuel
where it then comes out of suspension
when the engine cools down and corrodes
expensive fuel system components.

�� Has a stabilizer to keep fuel fresher longer

�� If using bio-diesel, fuel injection equipment
manufacturers suggest a maximum 5%
(B5).

[Capt. DQ]

Bruce,

This supplier said his fuel (Bio-Diesel) meets the EN590 standard. We are using it in our company trucks and they seem to be getting better fuel mileage at this point, but have had to change fuel filters from clogging up in most of the trucks after a couple of tank fulls but now have settled in and seem to be doing fine at this point.

But my worry is combining to much reg. diesel(off-road), when your not in place to get the Bio-Diesel you normally are using. Probaly not going to matter other than keep plenty of fuel filters on board.

Thanks, DQ