Final answer:
New oil should be filtered before use in contamination-sensitive applications to remove impurities and achieve the desired ISO cleanliness level.
Step-by-step explanation:
In contamination-sensitive applications where ISO cleanliness levels are being monitored, new oil should be filtered before use to remove impurities and contaminants. This is important because any contaminants in the oil can affect the performance and reliability of the application.
Filtering the oil helps achieve the desired ISO cleanliness level by removing particles, debris, and other substances that might be present in the oil. These contaminants can come from various sources such as the production process, storage, or transportation.
By ensuring that the oil is clean and free from contaminants, the risk of damage or malfunction in contamination-sensitive applications is reduced, leading to better overall performance and reliability.