How does incorrect differential fluid levels affect vehicle performance?

Maintaining the correct differential fluid levels is crucial for the proper functioning of a vehicle's drivetrain. When the differential fluid is insufficient or overly contaminated, it reduces the lubrication and cooling needed for the differential gears to operate smoothly. This can lead to increased friction and heat buildup, causing wear and tear on the differential components.

If the fluid levels remain incorrect over time, the stress on the differential may result in eventual failure. Such failure could manifest as grinding noises, vibrations, or a complete breakdown of the differential system, severely impacting the vehicle's operational capacity and safety. Symptoms of differential failure can lead to costly repairs and significant downtime. Therefore, ensuring the differential fluid is at the correct level protects against these failures and maintains optimal performance.