What type of oil is used in the system?

The correct answer is associated with the specific type of oil designated for use in the aircraft system, which is indicated by the green can. Different oil types possess distinctive properties to meet the demands of aircraft systems, including temperature resistance, lubricating capabilities, and chemical stability. The green can designation reflects the specific formulation of oil that aligns with the aircraft manufacturer's specifications and operational requirements.

Using the appropriate oil type is critical for maintaining engine performance and reliability. Different oil colors usually signify distinct additives or compositions; thus, using an oil that is not specified (for example, red, blue, or clear can) could result in inadequate lubrication, increased wear, or even potential engine failure. In the context of aircraft operation, the green can oil's compliance with industry standards ensures that the oil will effectively protect the engine components under the conditions encountered during flight.