12 Volvo Engines
Oil Change Intervals
The length of time an engine can operate
before an oil change depends on the
quality oil used, the type of fuel used,
fuel consumption, engine oil consumption,
vehicle application, level of dust in the air,
and fuel consumption. The change intervals
given in this manual are maximum intervals.
If the vehicle is operating in heavy-duty
operation, dusty or off-road conditions, etc.,
reduce the intervals for more frequent oil
changes.
Note: Use the information in the table below
to determine the operating condition and
usage applicable to your vehicle.
Engine Operating Condition Medium Heavy Severe
Total Fuel Consumption (mpg) More than 6 More than
4.7
More than 3.7
Total Fuel Consumption (L/100 km) Less than 39 Less than 50 Less than 64
Engine Oil and Filter Change Interval, km
(miles)
56 000
(35,000)
40 000
(25,000)
24 000
(15,000)
Note: If idle time is greater than 25%, use the next lower drain interval.
For additional information about oil change
intervals, see your Prevost dealer. Also, refer
to Bulletin 175-60, Oil and Filters, Volvo
Components.
For a complete list of approved oils, see
your Prevost dealer. Also, refer to Bulletin
175-61, Approved Oils, Volvo Components.
Cooling System
WARNING
DO NOT remove the coolant fill cap if
the coolant in the surge tank is boiling.
Also, DO NOT remove the cap while the
engine and radiator are still hot. Scalding
fluid and steam may be blown out under
pressure if the cap is taken off too soon
and can cause personal injury.
CAUTION
Never add coolant to a hot or overheated
engine. Engine damage can result. Allow
the engine to cool first.
Coolant capacity including heating system is
approximately 91 liters (24 US gallons).
When the coolant level in the cooling system
is low, the CHECK light illuminates. When
the coolant level in the cooling system is
critically low, the STOP light illuminates.
Stop the vehicle in a safe location and add
coolant to the cooling system surge tank as
soon as possible.
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