Is the maintenance manual for Emgrand 5W30 or 5W40?
1 Answers
Emgrand maintenance manual specifies 5W30. Introduction to 5W30 engine oil: 5W30 represents the oil grade, where the number before W indicates the minimum operating temperature of the oil. 5W can withstand temperatures as low as -30 degrees Celsius. The number before W denotes the oil's low-temperature flow performance, while the number after W represents the oil's high-temperature viscosity. Grades include SAE 20, 30, 40, etc., with higher numbers indicating higher viscosity. Difference between 5W20 and 5W40 engine oils: The differences lie in their applicable temperature ranges and viscosity levels. 5W40 is suitable for temperatures as low as -35 degrees Celsius, while 5W30 is suitable for temperatures as low as -30 degrees Celsius. 5W30 oil has relatively lower viscosity and excellent flow performance, whereas the higher viscosity 0W40 oil can withstand greater pressure and provides superior sealing performance for internal combustion engines.