What are two types of oil protective devices?

The selection of an oil pressure gauge and an oil shutdown switch as types of oil protective devices is accurate because both play critical roles in ensuring the proper functioning and safety of engine systems.

An oil pressure gauge monitors the oil pressure in a system, providing real-time information to operators about the health and functionality of the lubrication system. If the oil pressure drops below a certain threshold, it can indicate potential issues like low oil levels or pump failure, which can lead to engine damage.

The oil shutdown switch, on the other hand, acts as a protective mechanism that automatically shuts down the engine if the oil pressure falls to a dangerously low level. This feature is crucial for preventing catastrophic engine failure due to insufficient lubrication, thereby protecting the engine from severe damage.

Together, these devices work to monitor and manage oil pressure effectively, ensuring that the engine remains properly lubricated and operational.