Diesel engines have the ability to burn a wide variety of
fuels. These fuels are divided into two general groups,
Use a mixture of fill water, antifreeze and cooling system
preferred and permissible.
Types of Fuel
The preferred fuels provide maximum engine service life
Always add conditioner to water. Never use plain water
and performance. They are distillate fuels. They are
commonly called fuel oil, furnace oil, diesel fuel, gas oil,
Acceptable water for use in the ethylene glycol-type
antifreeze and water mixture is shown on the chart
The permissible fuels are crude oils or blended fuels.
Use of these fuels can result in higher maintenance
costs and reduced engine service life.
The minimum cetane number recommended for the
engine is 40.
Fuel Cloud Point
Fuel waxing can plug the fuel filters in cold weather. The
fuel cloud point must be below the temperature of the
surrounding air to prevent filter waxing and power loss.
Fuel Sulfur Content
6.5 or higher
6.5 or higher
The percentage of sulfur in the fuel will affect the engine
oil recommendations. If the fuel has over 0.5% sulfur
ppm = parts per million
content, the CD engine oil must have a TBN of 20 times
the percentage of fuel sulfur (TBN as measured by the
ASTM D-2896 method).
Use ethylene glycol-type antifreeze. Use the correct
amount to provide freeze protection to the lowest
expected outside temperature.
Use cooling system conditioner to provide a 3% to 6%
concentration in the coolant. Follow the instructions on
3% = approximately 1 liter per 33 liters (1 pint per 4 U.S.
6% = approximately 1 liter per 16 liters (1 pint per 2 U.S.