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Diesel fuel is seldom completely free of water. To prevent
fuel system trouble, drain the accumulated water from
the fuel/water separator using the fuel/water separator
drain provided. If you buy good quality fuel and follow
the cold weather advice above, fuel conditioners should
not be required in your vehicle. If available in your area,
a high cetane “premium” diesel fuel may offer improved
cold-starting and warm-up performance.
Fuel Specifications
The Cummins Turbocharged, Charge Air Cooled, Diesel
engine has been developed to take advantage of the high
energy content and generally lower cost No. 2 Ultra Low
Sulfur diesel fuel or No. 2 Ultra Low Sulfur climatized
diesel fuels. Experience has shown that it also operates
on No. 1 Ultra Low Sulfur diesel fuels or other fuels
within specification.
NOTE: A maximum blend of 5% biodiesel meeting
ASTM specification D-6751 may be used with your
Cummins Diesel equipped vehicle.
NOTE: In addition, commercially available fuel addi-
tives are not necessary for the proper operation of your
Cummins Diesel equipped vehicle.
NOTE: No. 1 Ultra Low Sulfur diesel fuel should only
be used where extended arctic conditions (-10°F or -23°C)
exist.
342 STARTING AND OPERATING