Do not mix gasoline or alcohol with diesel fuel.
This mixture can cause an
Any adjustment to compensate for reduced performance with a fuel system
alternate fuel is not warrantable. Cummins, the diesel engine manufacturer,
advises that certain fuels, listed below, can not provide adequate lubrication to the
Bosch fuel injection pump internal parts and must not be used. If these fuels are
used, it will result in internal parts failure in the Bosch fuel injection pump, due to
lack of lubrication, and any warranty repair will be voided.
Use ASTM No. 2-D fuel with a minimum Cetane number of 40. No. 2 diesel fuel gives the best
economy and performance under most operating conditions. Fuels with Cetane numbers higher than 40 may be
needed in high altitudes or extremely low ambient temperatures to prevent misfires and excessive smoke. At operating
temperatures below 32º F (0º C), use a blend of No. 1-D and No. 2-D fuels, also known as "winterized" No. 2-D.
Use low sulfur content fuel having a cloud point that is at least 10 degrees below the lowest
expected fuel temperature. Cloud point is the temperature at which crystals begin to form in diesel fuel. The
viscosity of the fuel must be kept above 1.3 centistokes to provide adequate fuel system lubrication at 104º F (40º C).
Acceptable Alternate Fuel Types:
No. 1-D Diesel and No. 2 Fuel Oil,
No. 1-K Kerosene, No. 2-K Kerosene,
Jet-A, Jet A-1, JP-5, and JP-8*
Unacceptable Fuel Types:
Jet-B, JP-4, and Cite
*JP-8 (MIL-T-83133) is acceptable if its lubricity is 3100 grams or greater as measured with the US Army scuffing
BOCLE test or Wear Scuff Diameter less than 0.45 mm at 60º C (less than 0.38 mm at 25º C) as measured with the