What Grade of Engine Oil Should a Buick Excelle Use?

[DiDamian]

Buick Excelle should use 5W30 grade engine oil. The following are the functions of engine oil: 1. Engine oil has the effects of lubrication, sealing, heat dissipation, and rust prevention. 2. If the engine oil is insufficient, driving under conditions of inadequate lubrication, poor sealing, and insufficient heat dissipation will cause excessive wear, even severe local wear or damage, and in serious cases, the engine may be scrapped. The following are the methods for selecting engine oil for Buick vehicles: 1. Engine oil can be selected based on the highest and lowest local temperatures, vehicle grade, and vehicle condition. 2. If engine oil with too high viscosity is selected, the movement resistance will increase, affecting the engine's power. 3. If engine oil with too low viscosity is selected, the lubrication quality cannot be guaranteed, and engine wear will be aggravated. 4. For engines that are severely worn and have large matching gaps, engine oil with higher viscosity can be selected to improve the sealing performance of matching components.