TM 5-3895-382-24
Fuel Sulfur
The percentage of sulfur in fuel affects engine oil
recommendations. Fuel sulfur can change chemically
during combustion. The chemical change forms both
sulfurous acids and sulfuric acids. The adds contact
metal surfaces and cause corrosive wear to the
surfaces. Sulfur oxides formed during combustion also
produce particulate exhaust emissions.
Some
lubricating
oil
additives
contain
alkaline
compounds which neutralize acids in combustion gases
and minimize corrosive wear. Reserve alkalinity in
lubricating oil is measured and defined with a Total Base
Number (TBN).
Periodically request fuel sulfur content information from
your fuel suppler. Fuel sulfur content can change with
each bulk delivery.
More information concerning fuel sulfur and lubrication
can be found in the topic Lubricant Specifications in this
manual.
Refer to Diesel Fuels and Your Engine, SEBD0717, or
contact your Caterpillar dealer for more information on
fuel selection and fuel properties.
Maintenance Section
Fueling Specifications
1-34
