Oilers/Plant Tenders (HHC) Civil Service Practice Exam

True or False: Detergents are sometimes added to lubricants to prevent sludge formation in gearboxes.

1. True

2. False

3. Only in synthetic oils

4. It is a standard practice

The correct answer is: True

Detergents are indeed added to lubricants, including those used in gearboxes, to help prevent sludge formation. Sludge can result from the breakdown of oil, contaminants, and oxidation, leading to decreased efficiency and potential damage to machinery. The primary function of detergents in lubricants is to keep contaminants suspended, preventing them from settling out and forming sludge deposits. This is particularly important in environments where high temperatures and stresses are present, such as gearboxes, where maintaining proper lubrication is crucial for longevity and overall performance. While synthetic oils may have specialized formulations, the use of detergents is not limited to them; indeed, many conventional oil formulations also incorporate detergents as standard practice to enhance their stability and performance. This makes the idea that only synthetic oils employ detergents misleading, as the use of detergents in lubricants is a common approach across various types of oil products. Thus, the statement about the inclusion of detergents to prevent sludge formation is accurate.