Envoy 2WD V6-4.3L VIN W (1998)
Engine Oil: Fluid Type Specifications
ENGINE OIL VISCOSITY
All Temperatures ............................................................................................................................................................................. SAE 5W-30 (Preferred)
Above 0°F (-18°C) .......................................................................................................................................................................................... SAE 10W-30
Using oils of any viscosity other than those viscosity's recommended could result in engine damage. When choosing an oil, consider the range of
temperatures the vehicle will be operated in before the next oil change. Then, select the recommended oil viscosity.
The recommended oil viscosity for all vehicles when the temperature is above -18° C (0° F) is SAE 1OW-30.
Engine oil viscosity (thickness) has an effect on the fuel economy and the cold-weather operation (starting and oil flow). Lower viscosity engine oils can
provide better fuel economy and cold-weather performance. However, higher temperature weather condition require higher viscosity engine oils for
satisfactory lubrication. When the temperature will be very cold and never above 16° C (60° F), SAE 5W-30 should be used in all models.
In areas of the world other than North America, it may be difficult to find oils that display the API STARBURST symbol and that are labeled as meeting
the GM4718M Specification.
If you cannot find API STARBURST displaying oils identified as meeting the GM4718M requirements, look for oils that meet the API Service SJ and
ACEA A3-96 requirements.
The recommended SAE engine oil viscosity is 5W-30, however, additional engine oil viscosities meeting the API Service SJ and ACEA A3-96
requirements may be used in accordance with the temperature ranges as shown in figure 3.
NOTE: SAE 20W-50 or oils of other viscosity rating or quality designations are NOT recommended for use in any vehicles at any time.
