Never let your car's gearbox run out of oil because it can be life-threatening.

When opening the hood, next to the engine oil dipstick you may see the transmission oil dipstick (usually marked A/T OIL), or it may not be visible.

Nowadays, many luxury car manufacturers have long since removed the dipstick from most of their models, and recently many other popular car manufacturers have also done the same on many of their new models. This problem seems simple, but is quite complicated and has the potential to damage the gearbox if the user does not have knowledge about gearbox oil.

Missing gear can cause stuck gears

Inside a manual transmission, the oil plays a primary role in lubrication, cleaning, and cooling. Lack of oil or dirty oil inside a manual transmission can only make it harder for the driver to shift gears, or worse, cause the gears to get stuck.

Leaking oil will wet the parts under the car.

When there is a lack of gearbox oil, the hydraulic pump system operates inefficiently, resulting in insufficient pressure, causing the friction plates to slip. As a result, the engine still increases rpm, but the vehicle is very weak, accelerates poorly, in severe cases it can cause the friction plates to slip a lot and burn, cannot change gears, and the worst consequence is complete failure of the gearbox.

Transmission fluid loss can be dangerous due to leaking gaskets.

One of the simple things every driver can do is to monitor for signs of abnormality that may cause transmission fluid loss. Observe the location where the car is parked overnight. If you see oil leaking under the floor at the location of the transmission, you should immediately take the car to a reputable garage for inspection and repair.

Changing the wrong type of gearbox oil can cause rapid damage to the gearbox.

Changing the wrong grade of transmission fluid can also be the cause of transmission failure. Many car manufacturers such as Bentley, BMW, Mercedes have their own oil for their new models. Differences in viscosity and heat resistance can be factors that cause the transmission to malfunction.

In addition, the gearbox oil used for too long without replacement, dirty and containing a lot of metal shavings, can also be another cause of damage to the automatic gearbox. The valves and hydraulic pumps inside the automatic gearbox are very precise parts and are very susceptible to clogging or jamming, causing the gearbox to not operate properly as designed with symptoms such as jumping gears that are not suitable for the speed, jerking, poor vehicle acceleration, etc.