Engine Oil Classification Recommended API classification: Above SJ Recommended SAE viscosity classification The following lubricants should be selected for all engines to enhance excellent performance and maximum effect. 1. Observe the API classification guide. 2. Proper SAE classification number should be selected within ambient temperature ranges. Do not use the lubricant with SAE classification number and API grade not identified on the container. *1. 10W-30 engine oil is recommended If 10W-30 is not applicable, proper engine oil will be possible according to temperature ranges. G643(E) Service Manual Chapter 2. Recommended Maintenance 18