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What Causes Transmission Oil Leaks?

2 Answers

VonLukas

07/28/25 3:01pm

Oil seal aging and deformation; Damage to the joint surface of the transmission case or loose transmission cover screws; Improper use of lubricating oil, causing excessive foaming in the transmission oil, leading to an increased oil level. Oil leaks can result in insufficient lubrication, accelerating friction between gears. Moreover, transmission oil also serves to cool and remove impurities within the transmission. Prolonged operation without proper lubrication can lead to transmission failure. Below are methods to address transmission oil leaks: 1. Tighten the nuts: If the screws are loose, simply tightening the nuts may suffice. 2. Replace the oil seal: If the oil seal is aged, replace the old oil seal. 3. Weld and repair: If the oil leak is due to wear on the shaft neck, the worn part should be welded and repaired or replaced. 4. Replace gears: If the transmission is leaking oil, the shift gears should be replaced based on the extent of wear.

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JamesonLynn

08/11/25 10:44pm

I've encountered transmission oil leaks several times, mainly due to aging seals or cracks in the oil pan. The transmission oil seeps out through these gaps, and if too much leaks, the oil level becomes too low, increasing friction inside the transmission. This can lead to overheating and damage to internal gears, potentially causing the entire system to fail. If you notice rough shifting or oil stains under the chassis while driving, it's time to pay attention. Last time my car had an oil leak, it was because I hadn't replaced the sealing ring for a long time, and the repair cost me nearly a thousand bucks. So, if you spot any issues, don't delay—get it checked at a professional shop right away to prevent small problems from turning into big troubles.

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