What is the difference between CD and CF engine oils?
1 Answers
CD and CF engine oils differ in terms of application and performance. In terms of application: CD-grade oil is used for ordinary turbocharged diesel engines or light-duty small trucks equipped with diesel engines; CF-grade oil is designed for high-speed diesel engines with heavy-duty intercooled turbocharging or marine diesel engines. In terms of performance, CD-grade oil has an engine strengthening coefficient of 50-80, while CF-grade oil has an engine strengthening coefficient above 80. Below are detailed introductions about engine oil: 1. Function: Engine oil, also known as engine lubricant, serves to lubricate and reduce wear in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and act as a shock absorber. It is often referred to as the 'blood' of a car. The engine is the heart of a vehicle, containing many metal surfaces that move against each other. These components operate at high speeds, in harsh environments, and can reach temperatures between 400°C and 600°C. Under such severe conditions, only qualified lubricating oil can reduce wear on engine parts and extend their service life. 2. Classification: Engine oils are categorized into three types based on their source: conventional mineral oil, synthetic oil, and nano-ceramic oil. Synthetic oil offers higher lubricity, lower friction resistance, better resistance to oxidation, and stronger cleaning properties compared to mineral oil. Its drawbacks include slightly poorer low-temperature fluidity and heat resistance than mineral oil. Nano-ceramic oil is formulated by adding nano-ceramic additives and other compounds to base oil, and it can be widely used in the lubrication systems of vehicle internal combustion engines. The more advanced the performance, the higher the corresponding price.
