These fuels are lighter than the No. 2 grades of fuel. The
cetane number of the fuels in table must be at least 40. If the
viscosity is below 1.4 cSt at 38°C (100°F) use the fuel only in
temperatures below 0°C (32°F). Do not use any fuels with a
viscosity of less than 1.2 cSt at 38°C (100°F). Fuel cooling
may be required in order to maintain the viscosity of 1.4 cSt at
the fuel injection pump.
There are many other diesel fuel specifications that are
published by governments and by technological societies.
Usually, those specifications do not review all the requirements
that are addressed in this specification. To ensure optimum
engine performance, a complete fuel analysis should be
obtained before engine operation. The fuel analysis should
include all of the properties that are listed in the above table
(distillate fuels). If a particular fuel does not meet the minimum
Caterpillar requirements, the engine could exhibit the following
problems: excessive wear of the fuel system, failure of the fuel
system, and excessive wear of the engine that is caused by
deposits or corrosion.