What are the different types of motor oil classifications?

[DiKimberly]

Motor oil classifications typically include two methods: viscosity grading and oil quality grading. SAE Viscosity Grading: According to the viscosity classification method, lubricating oils are divided into three types: high-temperature type for summer use, low-temperature type for winter use, and all-season type suitable for both winter and summer. API Engine Oil Quality Classification: According to the API engine oil quality classification method, they can be divided into two categories. One type is oil with an S prefix, which is suitable for gasoline engines, and the other is oil with a C prefix, which is suitable for both gasoline and diesel engines.