Question 645Steam Plants - Assistant Engineer

The correct answer is D) Adsorbent filter. Adsorbent filters, such as those containing activated carbon, can remove additives from lubricating oil by adsorbing them onto the filter media. This depletion of additives can be detrimental to the oil's performance and the equipment it is lubricating. The other options are not as effective at removing additives. Extended area membrane filters and cloth bag extractors are primarily designed to remove particulate matter, while absorbent filters are more focused on absorbing water and other contaminants rather than selectively removing additives.