Caterpillar recently approved the use of B20 biodiesel, a 20 percent dilution of biodiesel with standard diesel, across their range of compact and mid-range engines including the C0.5 through C2.2 Tier 4 Interim (11 to 66 horsepower), the C4.4, C4.4 ACERT and C6.6 ACERT (72 to 275 horsepower) Tier 3/Stage IIIA compliant engines.
The addition of these engines to the B20 approved product line follows successful testing of higher percentage blended fuels in a number of installations. Results of these tests indicate trouble-free operation.
Biodiesel used in B20 blends must meet the most current version of ASTM D6751 or EN14214. The final B20 blend should meet the minimum requirements of the upcoming ASTM specification for B5-B20 blends.