Volvo S60 Owner's Manual page 193

2006 Volvo S60
engine, that you use a heavier weight oil, such as SAE 10W/30. See the viscosity chart.
Operation in temperate climates
Incorrect viscosity oil can shorten engine life. Under normal use when temperatures do not exceed 86° F
(30° C), SAE 5W/30 will provide good fuel economy and engine protection. See the viscosity chart.
Extreme engine operation
Synthetic oils meeting SAE 10W/30 and complying with oil quality requirements are recommended for
driving in areas of sustained temperature extremes (hot or cold), when towing a trailer over long
distances, and for prolonged driving in mountainous areas.
American Petroleum Institute (API) symbol
The API Service Symbol "donut" is divided into three parts:
The upper section describes the oilÕs performance level.
The center identifies the oilÕs viscosity.
The lower section indicates whether the oil has demonstrated energy-conserving properties in a
standard test in comparison to a reference oil.
pg. 143 Maintenance and service
Oils and fluids (Contd)
Changing engine oil and oil filter
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American Petroleum Institute (API) symbol