Operator`s manual

54 Fuel System
Fuel Filters
Note: When draining the fuel filters, collect
the waste in a fuel-proof container. Always
dispose of coolant according to Federal or
local regulations. Take the drained fuel and
water to a recycle or waste management
center.
For the Volvo engine, change the fuel filters
at every other oil change when running the
15,000 mile (24,000 km) oil drain interval.
Change the fuel filters every oil change when
running the 25,000 mile
(40,000 km) oil drain interval. Drain the
primary filter water trap daily.
For other engines, the engine manufacturers
recommend changing the fuel filter at every
oil change. For bleeding the fuel system,
see “Bleeding the Fuel System” page 105.
For Cummins engines see manufacturer’s
information manual included in your
introductory package.
W2003931
Fuel Sulfur Content
Fuel sold after 1994 for highway use can
only contain a maximum sulfur content of
0.05% by weight. This was done to reduce
particle emissions in the exhaust.
The sulfur content for off-highway use
continues to be specified at a maximum of
0.5% by weight. The use of a fuel containing
0.5% or higher level of sulfur, necessitates
more frequent engine oil changes because
of sulfur deposits and higher corrosion risk.
If using fuels with high sulfur content, the
oil change intervals must be cut in half. See
“Sulfur Level and TBN” page 66 for more
information.
Note: The use of low sulfur diesel oil fuel
does not permit extension of engine oil
change intervals or oil filter changes.