Will switching from 5w30 to 0w20 damage the engine?

[Joshua]

Switching from 5w30 to 0w20 engine oil will not damage the engine. However, it is best to choose the appropriate engine oil according to your vehicle's engine specifications. If the vehicle's engine allows the use of 20-viscosity engine oil as the minimum requirement, then switching to 0W20 oil is acceptable. Reasons why the engine may roar after switching from 5w30 to 0w20: 1. Possible overfilling of engine oil or using non-compliant oil: Excessive engine oil may enter the combustion chamber through the gap between the cylinder and piston, leading to increased carbon deposits in the combustion chamber, higher compression ratio, and increased likelihood of knocking. 2. Unsuitable oil viscosity: Different grades of engine oil have different characteristics, including varying performance in low-temperature startup and high-temperature anti-wear/adhesion properties. If the engine cannot adapt to the viscosity of the new oil, it may increase the RPM, resulting in engine roaring.