How can contamination affect lubricant performance?

Contamination can significantly affect lubricant performance by leading to reduced efficiency and causing damage to machinery. When contaminants such as dirt, water, dust, or metal particles enter the lubricant, they can disrupt the lubricant’s ability to form a protective film over moving parts. This impairment can increase friction and wear, resulting in higher temperatures and accelerated component degradation.

Additionally, contamination can compromise the lubricant's chemical stability, leading to breakdown products that could further harm machinery. For instance, water contamination can cause rust and corrosion, while particulate matter can cause abrasive wear. Therefore, maintaining the purity of lubricants is crucial for ensuring optimal equipment performance and longevity. This highlights why option B accurately describes the impact of contamination on lubricants.