
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.


