Explanation:
Adding oil to a motor that has a low oil level can reduce knocking noises in many cases. However, the effectiveness of this solution depends on the underlying cause of the knocking sound. If the knocking sound is due to a low oil level, adding oil can help to reduce or eliminate the noise.
However, if the knocking sound is caused by other factors such as worn engine bearings, damaged pistons, or a loose connecting rod, adding oil may not resolve the issue. In these cases, the knocking sound may persist or even worsen after adding oil.
Therefore, it's important to accurately diagnose the source of the knocking sound before determining whether adding oil will be an effective solution. If the cause is not related to a low oil level, seeking professional repair or maintenance may be necessary.
