Which of the following is NOT performed as an after-operation check?

The best choice for what is NOT performed as an after-operation check is checking oil levels. After-operation checks typically focus on tasks that ensure the vehicle is ready for its next use and that any potential issues are addressed immediately. Common after-operation checks include washing the vehicle to remove dirt and debris, topping off fuel if it’s below a certain level, and draining air tanks to prevent moisture buildup that could affect the braking system.

While checking oil levels is certainly an important maintenance task, it is generally performed during a more comprehensive inspection or maintenance routine rather than immediately after operation. The focus of after-operation checks is to prepare the vehicle for short-term readiness, while detailed fluid checks and other maintenance activities are conducted at regular intervals as part of ongoing maintenance schedules.