Oilers/Plant Tenders (HHC) Civil Service Practice Exam 2026 - Free Oilers & Plant Tenders Practice Questions and Study Guide

When using absorbent type lubricating oil filters, it is essential to make sure that the particular oil additives are not removed by the filter. Absorbent filters are designed to trap contaminants from the oil but can sometimes also affect the additives that provide important functions, such as reducing wear, preventing corrosion, and improving lubrication. If these additives are removed, the performance of the oil may be compromised, which can lead to increased wear and shorten the lifespan of the equipment being lubricated. Therefore, maintaining the integrity of the oil's additives is crucial for ensuring optimal lubrication and protection of machinery.

The other choices focus on aspects that might be helpful but do not directly address the primary concern associated with the use of absorbent filters. For instance, checking the oil color or ensuring the oil is at room temperature is more related to general oil maintenance rather than the specific issue of additive removal. Limiting usage to non-viscous oils is also not directly relevant to the fundamental function of the filter in protecting the oil’s additive package.