What Abnormalities Will Occur When a Manual Transmission Lacks Oil?

[LaEmily]

Manual transmission oil deficiency manifests as follows: 1. Gear shifting feels jerky and not smooth. 2. Difficulty and roughness in gear shifting. 3. Vehicle jerks during gear shifting. 4. When pressing the accelerator, the increase in RPM does not proportionally match the increase in vehicle speed. In other words, while the RPM rises normally, the vehicle speed fails to increase accordingly, giving the sensation of not being properly engaged in gear. Additionally, starting the vehicle becomes particularly laborious. For the transmission itself, oil deficiency leads to increased friction, causing the transmission to overheat, resulting in gear surface damage, transmission burnout, and reduced transmission lifespan. Additional transmission knowledge: Transmission oil serves the functions of cleaning, lubricating, cooling, and sealing within the transmission, maintaining the cleanliness of the gear system and lubricating the transmission components to extend their lifespan. If transmission oil is not replaced for an extended period, it becomes increasingly viscous, impairing heat dissipation and leading to excessively high temperatures. Over time, this will affect the transmission's service life. When replacing, it is essential to use specialized original equipment manufacturer (OEM) transmission oil, and mixing different types is not allowed. One important note: adding too much oil increases resistance during operation, leading to component wear; conversely, insufficient oil results in sluggish gear shifting.