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Publication Title | BIODIESEL USAGE CHECKLIST Biodiesel is the pure, or 100 percent, biodiesel fuel.

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Text | BIODIESEL USAGE CHECKLIST Biodiesel is the pure, or 100 percent, biodiesel fuel. | 001



Basic Terminology:

BIODIESEL USAGE CHECKLIST Biodiesel is the pure, or 100 percent, biodiesel fuel.

It is referred to as B100 or “neat” biodiesel.

A biodiesel blend is pure biodiesel blended with petrodiesel. Biodiesel blends are referred to as Bxx. The xx indicates the amount of biodiesel in the blend (i.e., a B20 blend is 20 percent by volume biodiesel and 80 percent by volume petrodiesel ).

̧ Ensure the biodiesel meets the ASTM specification for pure biodiesel (ASTM D 6751) before blending with petrodiesel.

The specification for biodiesel is designed to ensure that consumers will not experience operational problems from the fuel’s use. Make sure that biodiesel meets this specification and that the fuel supplier will warrant this fact. Quality fuel will provide the consumer with improved air quality and enhanced operability. Purchase fuel only from a reputable source.

̧ Check fuel filters on the vehicles and in the delivery system frequently upon initial biodiesel use, and change them as necessary.

Biodiesel and biodiesel blends have excellent solvent properties. In some cases the use of petrodiesel, especially #2 petrodiesel, leaves a deposit in the bottom of fuel lines, tanks, and delivery systems over time.

The use of biodiesel can dissolve this sediment and result in the need to change filters more frequently when first using biodiesel until the whole system has been cleaned of the deposits left by the petrodiesel. This same phenomenon has been observed when switching from #2 to #1 petrodiesel.

̧ Be aware of biodiesel's cold weather properties and take precautions as with #2 petrodiesel use in cold weather.

A 20 percent blend of biodiesel with petrodiesel raises the cold weather properties at least 3° F (pour point, cloud point, cold filter plugging point). In most cases, this has not been an issue. Twenty percent biodiesel blends have been used in the upper Wisconsin area and in Iowa during -25° F weather without issues. Solutions to biodiesel winter operability problems are the same solutions used with conventional #2 petrodiesel (use a pour point depressant, blend with #1diesel, use

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