Which oil qualities are essential for preventing corrosion?

Adhesiveness and cohesiveness are key qualities of oils that play a significant role in preventing corrosion. Adhesiveness ensures that the oil can effectively bond to metal surfaces, creating a protective layer that inhibits the exposure of metal to moisture, oxygen, and other corrosive agents. This bond helps prevent rust and deterioration.

Cohesiveness, on the other hand, refers to the oil's ability to maintain its integrity and not break apart easily under mechanical stress or thermal variations. This quality ensures that the protective layer remains consistent and effective over time, providing continuous protection against corrosion.

While other qualities, such as viscosity and thermal conductivity, are important for the overall performance of lubricants, they do not directly address the issue of corrosion prevention. Stability and purity are also crucial but more related to the longevity and effectiveness of the oil rather than its direct protective abilities against corrosion. Density and color are generally not indicative of corrosion resistance and do not play a significant role in protective capabilities.