Oil Viscosity

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

The SAE grade number indicates the viscosity of the oil. A proper SAE grade number should be selected according to ambient temperature.

NOTE:

SAE 5W-30 engine oil is strongly recommended for optimum fuel economy and cold starting.
If engine oil other than 5W-30 is used, the engine may be seized by poor lubrication.

Fig 1: Identifying Proper SAE Grade Number
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.