Will switching from 5w40 to 5w30 engine oil cause oil consumption in Volkswagen Bora?

[SanChase]

Switching from 5w40 to 5w30 engine oil in a Volkswagen Bora will not cause harm. The 40-grade oil is slightly more viscous than the 30-grade, resulting in slightly higher engine resistance during use, which may lead to a small increase in fuel consumption. However, the engine noise will be quieter and more subdued. During regular vehicle use, it is important to change the engine oil periodically and replace the oil filter along with each oil change. The oil filter functions to filter the engine oil; without it, the oil may become dirty after some use. Additional information: 1. Engine oil not only lubricates but also cleans, seals, buffers, prevents rust, and dissipates heat in the engine. When the engine is running, the oil forms a thin film on the surfaces of various engine components, preventing direct contact and friction between them. 2. If engine components directly contact and create friction, it will accelerate engine wear and cause the engine to overheat. Continuous operation in an overheated state can damage the engine. Over time, the performance of engine oil degrades, so it must be replaced regularly.