Does Differential Oil Never Need to Be Changed?
2 Answers
Automotive differential oil does require replacement, typically every three years or 60,000 kilometers. Below is relevant information about differential oil: 1. Function of differential oil: Differential oil is a lubricant specifically developed for lubricating the rear differential of rear-wheel-drive vehicles, effectively providing certain protection to the differential. 2. Consequences of not changing differential oil: The automotive differential is a mechanism that allows the left and right or front and rear drive wheels to rotate at different speeds; failure to replace the differential oil in a timely manner can result in the differential not functioning properly, leading to severe consequences during turns, such as vehicle rollover or instability.
I've been driving for decades and have heard the myth that differential oil never needs changing, but that's absolutely a misconception. I remember my old car's differential started making grinding noises, and upon inspection, the oil was filthy, full of metal shavings, nearly ruining the gears. After changing to fresh oil, the noise disappeared, and the car ran much smoother. Differential oil lubricates the gears to prevent friction, but over time, it degrades and deteriorates, especially under high-speed driving or heavy loads. It's recommended to check it every 30,000-50,000 kilometers or every two years, following the owner's manual. Not changing the oil poses significant risks—accelerated gear wear could lead to a breakdown, with repairs costing thousands. It's just not worth it. Proper differential maintenance saves both hassle and money. Don't believe the myths; regular oil changes ensure peace of mind.
