To know when to change the **oil filter**, it is important to follow the instructions in the **vehicle manual**. This manual provides the manufacturer's specific recommendations on the proper maintenance of the vehicle, including when it is necessary to change the oil filter.

- The oil filter is crucial for keeping the engine clean and running properly. Its function is to remove impurities from the oil circulating through the engine.
- Changing the oil filter according to the manual's instructions ensures that the engine is protected and operates efficiently.
- Not following the manual's recommendations can lead to premature engine wear and poor vehicle performance.

Therefore, it is essential to consult the vehicle manual to know the right time to change the oil filter, thus ensuring the proper functioning and longevity of the engine.