What grade is Castrol DX?

[LondonRose]

Castrol DX is an SN-grade fully synthetic engine oil, and the DX oil is specifically designed for the General Motors series. This oil has excellent lubrication performance. The selection methods for engine oil and brands are as follows: Engine oil selection method: Naturally aspirated engines have relatively modest requirements for oil quality and can use mineral oil or semi-synthetic oil. If the owner has a higher budget, fully synthetic oil can be used. Compared to naturally aspirated engines, turbocharged engines have a more compact structure and operate in harsher conditions, requiring higher-performance oil with better fluidity. Fully synthetic oil is recommended. Brand selection method: For choosing a lubricant brand, if you prioritize long oil life, you can choose Mobil lubricants; if you prioritize the oil's cleaning ability for the engine, Shell oil is recommended; if you need lubricants with strong oil film toughness, Castrol is a good choice. For example, turbocharged engines are prone to carbon deposits during high-speed operation, so Shell oil with strong cleaning ability can be selected.