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How often should the gear oil in a sedan be changed?

1 Answers
MiaAnn
07/23/25 9:46pm

Sedan gear oil should be changed every 60,000 to 80,000 kilometers. In small passenger vehicles, gear oil is also referred to as manual transmission fluid, as the internal components of a manual transmission rely on gears for power transfer, and the lubricant provides lubrication for these gears. Gear oil is a high-viscosity lubricant specifically designed to protect power transmission components, typically characterized by a strong sulfur odor. The primary requirement for gear oil is to form a continuous and resilient oil film on the contact surfaces between gears, meaning it must possess high oiliness to maintain a tough boundary oil layer between transmission components. Additionally, gear oil should have excellent viscosity-temperature properties to minimize friction losses in the power transmission mechanism and enhance transmission efficiency.

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