ENGINE OILS 5 - Mineral
Mineral engine oils are divided up into single-grade and multi-grade engine oils. This group of oils is considered as the classic engine oil that was used as a basis for the continued development of e.g. partially synthetic engine oils in the course of time.
Typical viscosities of mineral singe-grade engine oils are for example SAE 30 or SAE 40;
the most commonly used engine oil in the multi-grade area is SAE 15W-40.