Possible reasons for oil leakage from the Hyundai Solaris automatic transmission:
1. Worn or damaged seals
*Shaft seals, transmission seals, or crankcase gaskets can become worn or damaged over time, causing oil to leak.
2. Faulty oil plug or bolt
* The oil plug or bolt may be under-tightened or damaged, allowing oil to leak.
3. Damage to the gearbox housing
*Impact or damage to the transmission housing may cause cracks or holes that may leak oil.
4. Faulty oil line
* Oil lines connecting the transmission to the engine or radiator may leak due to cracks, leaks at the connections, or faulty hoses.
5. Overfilling the box with oil
*If too much oil is added to the transmission, it may leak out through the dipstick hole or other overflow points.
6. Using the wrong transmission fluid
*Using transmission fluid that does not meet Hyundai specifications may cause seal damage and leakage.
7. Wear on the inside of the gearbox
*Severe internal problems such as worn bearings or gears can cause excessive heat and pressure, causing oil leakage.
8. Defective crankcase ventilation
* A clogged or faulty crankcase vent valve can cause pressure to build up inside the transmission and leak oil.
How to diagnose an oil leak from an automatic transmission:
* Check the oil level on the dipstick and determine if oil is being lost.
* Visually inspect the transmission and surrounding area for signs of leaks.
* Check the oil plug, bolts and gaskets for damage or looseness.
* Use a UV lamp to identify leaks, especially in hard-to-reach areas.
*Consult a qualified mechanic for more accurate diagnosis and repair of the leak.