What are the causes of manual transmission oil leakage?

1 Answers
ArabellaLee
07/30/25 3:57am
Manual transmission oil leakage can be caused by: 1. Improper selection of lubricating oil, resulting in excessive foam, or an excessive amount of lubricating oil. In this case, replace the lubricating oil or adjust the oil quantity; 2. Loose side cover, damaged sealing gasket, or damaged oil seal. Replace with new parts; 3. Loose drain plug and transmission housing or cover fixing bolts. Tighten them according to the specified torque; 4. Loose or damaged odometer gear limiter. Tighten or replace it. Transmission oil can clean the car's gear system and also plays a role in lubrication, heat dissipation, and sealing, reducing wear and extending the life of the transmission. Manual transmission oil is also called gear oil, classified into six grades from GL1 to GL6.
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