The amount of additives in a typical crankcase oil will be_________ than the amount of additives in a compressor oil?

The correct choice indicates that a typical crankcase oil contains a higher amount of additives compared to compressor oil. This disparity arises from the differing operational demands and environments these lubricants are designed for.

Crankcase oils are primarily formulated for use in engine applications where they must withstand intense conditions such as high temperatures, combustion contaminants, and the need for improved wear protection. As a result, they incorporate a broader range of additives, including detergents, dispersants, anti-wear agents, and friction modifiers, which enhance performance under these rigorous conditions. The presence of these additives helps to maintain engine cleanliness, reduce wear, and prolong the life of the oil and engine components.

On the other hand, compressor oils are generally formulated for their own specific requirements, which may be less intensive than those faced by crankcase oils. While compressor oils do contain additives, their primary functions revolve around reducing friction, preventing rust, and maintaining lubrication under the particular pressures and temperatures present in compressor systems. However, these formulations do not typically necessitate the same level and variety of additives found in crankcase oils.

Understanding these differences helps clarify why crankcase oils typically have a higher concentration of additives compared to compressor oils, addressing the specific needs of engines more rigorously.