What Is The Low Temperature Dynamic Viscosity?
The low temperature dynamic viscosity is a measure of the amount of internal friction measured by a multi-stage oil at low temperature and high shear rate. The viscosity is tested by the Cold Start Simulator (CCS), which simulates the operating conditions of the engine cylinder liner at the cold start of the piston and has a good correlation with the cold start of the engine. Therefore, the low temperature dynamic viscosity can be used as a predictor of the engine at low temperatures. Viscosity index for smooth start-up under conditions. Under the same low temperature condition, the smaller the measured viscosity value, the better the cold start performance of the oil.