What should you check before changing the oil?

Before changing the oil, it is crucial to check the oil level, the condition of the oil, and the oil filter. This practice ensures a comprehensive understanding of the vehicle's oil system before a change is completed.

The oil level indicates how much oil is currently in the engine and whether it needs a top-up or a complete change. Checking the condition of the oil reveals its cleanliness and viscosity, which can inform whether the oil is due for a change based on degradation or contamination. Additionally, inspecting the oil filter is essential, as a clogged or old filter can lead to poor oil circulation and reduced engine performance. Ensuring all of these factors are in good condition can help maintain the health of the engine and enhance its efficiency.

Other options, while concerning important vehicle systems, do not directly relate to the oil change process.