Oilers/Plant Tenders (HHC) Civil Service Practice Exam

In what situation might grease be considered advantageous over oil?

1. When minimal lubrication is needed

2. When lubrication must be thick and adhere

3. When the machine is designed for oil only

4. When exposed to high-pressure conditions

The correct answer is: When lubrication must be thick and adhere

Grease is often favored in scenarios where lubrication needs to be thick and adhere to surfaces more effectively than oil. Because grease has a thicker consistency due to its soap base, it can stay in place more successfully in situations where there’s potential for leakage or when machinery works in inclined positions. The adherence of grease also means it provides a sustained lubrication effect over time, reducing the frequency of maintenance. This quality is especially useful in environments where machinery operates under challenging conditions, like heavy loads or adverse external influences. While other options mention situations involving minimal lubrication, machine design for oil, or high-pressure conditions, these don’t encompass the specific advantages that grease offers in terms of its thickness and ability to adhere, making it particularly suited for situations where strong, lasting lubrication is required.