How often should engine oil be checked for optimal performance?

Checking the engine oil every time you fuel up is essential for optimal performance. Engine oil plays a crucial role in lubricating engine components, reducing friction, and helping to maintain temperature control. Regular checks allow for early detection of leaks or excessive consumption, ensuring that the oil level remains adequate.

Frequent monitoring at every fuel-up also supports better engine health, since low oil levels can lead to increased wear and potential engine failure if not addressed promptly. This practice is particularly important for trucks and coaches that experience varying loads and driving conditions, which can impact oil consumption.

While other options suggest certain intervals for checking oil, they do not reflect the proactive approach necessary for maintaining engine performance. Monthly checks or only looking at oil during oil changes may not capture immediate issues, and waiting for problems to arise can result in more significant damage and costly repairs.