Eventually the syncros would go out because the fluid would lose its lubricating abilities.
internal transmission parts may stick depending on how much oil it was
There is no such thing as "transmission oil" there is only transmission fluid, but but over filling the reservoir could cause serious damage to your transmission..
This is not good, but if the oil is changed before to many miles are put on, no damage should result. The damage of more than a few miles use will be extreme wear on engine components leading to failure. Inside a transmission it could lead to swollen and damaged seal, foamed oil leading to transmission burnout.
How much overfilled is it? damage to the crank case may occur. I suggest draining the oil to the proper level immedietly.
Do not drive the car. Have it taken to a transmission specialist who will drain, flush, and replace the fluid. Most motor oil is too thick, and not compatible with the operation of the transmission. It could cause severe damage within a very short time.
NO!!!! do not do this, oil is oil, transmission fluid is transmission fluid, and antifreeze is antifreeze, do not mix any of these, it can perminately damage your engine.
Don't drive it, but have it towed to a reputable garage that can flush the transmission. Driving it with the oil may cause serious damage to the transmission.
If your KTM 250SX is blowing transmission oil out of the vent hose, it could be due to overfilling the transmission or a malfunctioning oil seal, which allows pressure to build up inside the transmission. Additionally, a clogged vent hose can prevent proper airflow, leading to excess pressure and oil being forced out. Another possibility is that the gearbox could be experiencing excessive wear or damage, causing increased pressure and oil leakage. Regular maintenance and checks can help identify and resolve these issues.
Engine wear and damage can occur.
There are several reasons this could occur. The first option would be that the oil is low or perhaps the transmission fluid is low.
The transmission oil drain plug on a BMW 3 series is an Allen plug, usually 17mm, on the bottom of the transmission.
I think you could. The vehicle speed sensor is next to the oil filter on a 1.8T engine, manual transmission. You could pull on the sensor cable while rotating the filter, and possibly damage the sensor. It's fairly easy to replace. Sensor cost is $20-50.