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Maintenance and Service 59
D11F and D13F Oil Filters (D13F shown, D11F similar)
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 specified on the previous pages,
that is: both VDS-4 and EO-O Premium Plus.
The use of synthetic oils does not permit the extension of the
recommended oil change intervals.
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. An oil is not fully defined until both the API quality
classification and
the viscosity grade are specified.
Choose the viscosity grade for the typical ambient temperature for the
application. Multigrade oils have a broad range that suit operation in changing
temperature.
USA22978.bk.book Page 59 Wednesday, July 9, 2008 9:09 AM