Biodiesel Blends

Blends of biodiesel and conventional hydrocarbon-based diesel are products most commonly distributed for use in the retail diesel fuel marketplace. Much of the world uses a system known as the "B" factor to state the amount of biodiesel in any fuel mix:

100% biodiesel is referred to as B100, while
20% biodiesel is labeled B20
5% biodiesel is labeled B5
2% biodiesel is labeled B2

Obviously, the higher the percentage of biodiesel, the more ecology-friendly the fuel is. It is common in the USA to see B99.9 because a federal tax credit is awarded to the first entity which blends petroleum diesel with pure biodiesel. Blends of 20 percent biodiesel with 80 percent petroleum diesel (B20) citation needed can generally be used in unmodified diesel engines. Biodiesel can also be used in its pure form (B100), but may require certain engine modifications citation needed to avoid maintenance and performance problems citation needed. Blending B100 with petroleum diesel may be accomplished by:

Mixing in tanks at manufacturing point prior to delivery to tanker truck.

Splash mixing in the tanker truck (adding specific percentages of Biodiesel and petroleum diesel).

In-line mixing, two components arrive at tanker truck simultaneously.

Metered pump mixing, petroleum diesel and Biodiesel meters are set to X total volume, transfer pump pulls from two points and mix is complete on leaving pump.