D
Group 177 Specifications
Specifications
Engines
General
For further information concerning component
specifications see service information in Group 1, “Oil
and Filter Change Intervals for Volvo Components,”
Publication Number 175–60, “Approved Oils Lists,
Volvo Components”, Publication Number 175–61, and
appropriate vendor literature.
In a modern diesel engine it is very important to have
regular oil changes. The demands of pulling high
loads, pulling at high elevations, extreme high or low
temperatures and longer service intervals, make the
choice of correct oil a hard task. The Volvo dealer, the
engine manufacturer or the oil manufacturer has the
expertise to analyze driving conditions and to recommend
which oil gives the best protection and economy.
Oil
The engine oil lubricates, seals, cools and cleans the
engine. Filtering the intake air and using a low sulfur
fuel helps the oil protect the engine parts. With better
engine designs and improved oils, the service intervals
have steadily increased. The interval choice depends on
the engine manufacturer specifications. Make sure the
correct oil type and also the correct viscosity are chosen
for the mileage interval driven.
Periodic oil testing is recommended. The test results give
a continuous picture of the health of the engine and can
warn well in advance of a problem developing.
The intervals will not cover all applications. In on/off
highway driving, severe off highway, continuous
stop-and-go city driving and extremely high mileages, the
oil change interval and preventive maintenance schedule
need to be customized for the best protection and
economy. The intervals listed in these specifications are
guidelines that should be used in establishing a correct
maintenance program.
CAUTION
Adding unknown additives may put the engine at risk of
failure. There are many aftermarket oil additives that
claim improved performance if added to the engine oil.
Each oil type recommended already contains additives
that have been tested by a collaboration with engine
and oil manufacturers.
Synthetic oil is offered as an alternative to the traditional
petroleum based oil for the engines. The ability of
synthetic oil to protect the engine is better than regular oil
but its life is the same as for regular oil. This is because
of the combustion by-products that contaminate the oil.
These contaminates will make the change intervals the
same as for regular oil. However, in extreme driving
conditions, a synthetic oil may be the only choice for the
application.
Note: It is not recommended to mix synthetic oils with
petroleum-based oils.
Coolant
The engine coolant protects the cooling system from
freezing or boil over problems. It also protects against
corrosion and cylinder liner pitting. Coolant requirements
are based on the additive levels present in the cooling
system. To be able to run the cooling system as long
as 2 years between coolant changes, there must be a
replenishment of additives as they are used up. Testing
should be done regularly to be sure the additive levels are
within recommended levels.
Never run the engine with only water in the cooling
system. Always use a mixture of clean water and a
recommended antifreeze. The mixture should never be
less than 40% antifreeze and 60% clean water or more
than 60% antifreeze and 40% clean water.
Texaco Extended Life Coolant
Note: For further information on Long life coolants and
Extended Life coolants refer to the coolant requirements,
specifications, and design and function in Function Group
1.
CAUTION
Texaco Long life coolant is colored red for identification
purposes, so as not to mistake it for conventional,
green coolant. Long life coolant will test as out of
additives (SCA), but SCA should not be added.
Fleetgaurd ES Complete Long Life Coolant
Note: For further information on Fleetgaurd ES Complete
Long Life Coolant refer to appropriate vendor literature.
Fuel
The sulfur content in low-sulfur fuel has been regulated to
a maximum of 0.05% per weight for No.2–D diesel fuel.
For fuels that have a sulfur content of 0.5% by weight
and above, most engine manufacturers are requiring that
oil is changed at shorter intervals. Sulfur creates highly
acidic pollutants in the oil that break down the additives at
a higher rate. If fuel with a higher sulfur content is used,
the engine manufacturers recommend that the oil change
intervals be reduced.
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