Synthetic Lubrication; Oil Viscosity; Oil Additives; Oil Consumption - PREVOST H3-41 Maintenance Manual

SECTION 01 : ENGINE
FIGURE 6: D13F OIL FILTERS

2.3.4 Synthetic Lubrication

Synthetic oils are offered by some oil suppliers
as an alternative to the traditional, petroleum
based oils for engines. These oils may be used
in Volvo engines, provided they meet the quality
levels the traditional, petroleum based oils for
engines. These oils may be used in Volvo
engines, provided they meet the quality level
VDS-4.
The use of synthetic oils does not permit the
extension of the recommended oil change
intervals.

2.3.5 Oil Viscosity

The viscosity grade defines the thickness of the
oil. The oil must be thin enough at low
temperatures for easy cold starts and thick
enough to protect at high temperatures. Oil is not
fully defined until
classification and the viscosity grade are
specified.
Choose the viscosity grade for the typical
ambient temperature
Multigrade oils have a broad range that suit
operation in changing temperature.
Volvo North America
viscosities shown in the viscosity/temperature
table for Volvo engines.
PA1615 Maintenance Manual All Series | Section 01 revised April 2017
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both the API quality
for the application.
recommends the

2.3.6 Oil Additives

CAUTION
Extra oil additives must never be added to any
engine oil used. Additives such as break-in
oils, top oils, graphitizers, and friction reducing
liquids are not necessary and may even harm
the engine.
Using oils to the quality standards recommended
in this manual makes the use of extra oil
additives unnecessary, as these oils already
contain a balanced treatment of additives.

2.3.7 Oil Consumption

Once the engine is stopped, check the oil level
daily. If the engine has just been stopped and it
is warm, wait approximately five minutes to allow
the oil to drain back to the oil pan before
checking. Add oil as necessary.
CAUTION
DO NOT overfill engine with oil.
All diesel engines are designed to consume
some oil, so it is normal to add oil periodically.
An engine used in heavy-duty operation will
consume more oil than one in normal operation.