Selection Of Engine Oil

Recommendation: 5W-20/GF4&SM (If not available, refer to the recommended API or ILSAC classification.)

API classification: SL, SM or above

ILSAC classification: GF3, GF4 or above

SAE viscosity grade: Refer to the recommended SAE viscosity number

Fig 1: Engine Oil Viscosity Chart

Courtesy of HYUNDAI MOTOR CO.

NOTE: For best performance and maximum protection of all types of operation, select only those lubricants which:

Satisfy the requirement of the API or ILSAC classification.
Have proper SAE grade number for expected ambient temperature range.
Lubricants that do not have both an SAE grade number and API or ILSAC service classification on the container should not be used.