FILTER 6P6664 - Caterpillar

These recommendations are subject to change without notice. Consult your local Cat dealer for the most up to date recommendations.
Biodiesel is a renewable fuel that can be made from vegetable oils, animal fat, and waste cooking oil. Soybean oil and rapeseed oil are typically the primary vegetable oil sources. The raw oils or animal fats are chemically processed (esterified) to form a fatty acid methyl ester (referred to as FAME). The esterified product (FAME) is biodiesel fuel that can be used in compression ignition engines. Without the chemical processing referred to as esterification, the oils or fats are not suitable for use as fuel in compression ignition engines. The oil or fat must be esterified and the water and contaminants removed.Fuel made of 100 percent FAME is referred to as B100 biodiesel or neat biodiesel.Biodiesel can be blended with distillate diesel fuel. The blends can be used as fuel. The most commonly available biodiesel blends are B5, which is 5 percent biodiesel and 95 percent distillate diesel fuel. Also, B20, which is 20 percent biodiesel and 80 percent distillate diesel fuel. The percentages are volume-based.U.S. distillate diesel fuel specification "ASTM D975" includes up to B5 (5 percent) biodiesel. Any diesel fuel in the U.S. may contain up to B5 biodiesel fuel without labeling that indicates biodiesel content.European distillate diesel fuel specification "EN 590" includes up to B5 (5 percent) biodiesel and in some regions up to B7 (7 percent) biodiesel. Any diesel fuel in Europe may contain up to B5 or in some regions up to B7 biodiesel fuel without labeling that indicates biodiesel content.Biodiesel fuel that is per Caterpillar and Industry recommended specifications (Refer to Table 2 in this Chapter) offers the following advantages:
Renewable fuel, nontoxic, and biodegradable
Reduces tailpipe particulate matter (PM), hydrocarbon (HC), and carbon monoxide (CO) emissions from most modern diesel engines
High lubricity, hence reduces friction
High cetane numberBiodiesel at B5 blend level has the same attributes as diesel fuel. At blend levels over B5, biodiesel has the following attributes that require management:
Energy density. At B100, biodiesel has about 8% lower energy density than diesel fuel. At B20 or lower blend levels, the energy density difference from diesel fuel is not significant.
Oxidation stability, storage stability, cold temperature properties, and materials compatibility. Some of these attributes are controlled by the specifications.
Tendency to dissolve and absorb water, which is higher than the tendency of diesel fuel to dissolve and absorb water.
Metal content. Biodiesel can contain certain materials naturally or due to processing (phosphorus, sodium, calcium, potassium, and magnesium). The maximum levels of these materials are controlled by the appropriate specifications.
Contaminants content due to incomplete esterification or purifying process. These contaminants may include glycerides, mono and di esters, sterol glucosides, and others.Meeting specifications as detailed in this Chapter is paramount for biodiesel fuel used in engines, to avoid performance issues and engine downtime.Refer to guidelines given in this Chapter and to Tables 2 and 4 for the biodiesel fuel requirements and specifications.Note: The user of the engine has the