Which is better for the Buick Excelle, 5w30 or 5w40 engine oil?
1 Answers
For the Buick Excelle, it is recommended to use 5w30 engine oil. The details about engine oil are as follows: 1. According to the car maintenance manual: 5w30 is the recommended engine oil for the Buick Excelle. The 5w30 engine oil has better fluidity and superior low-temperature anti-wear performance. 2. Low-viscosity engine oil has become mainstream: Only Volkswagen vehicles still require 40 engine oil due to piston tension issues. 3. Engine oil grades: They are classified by quality grade and viscosity grade. Engine oil for gasoline engines is usually denoted by the letter "S", while diesel engine oil is denoted by the letter "C". 4. Composition of engine oil: It consists of base oil and additives, where the base oil is the main component of the lubricant, determining its basic properties, and additives can improve the shortcomings of the base oil.