Many experts suggest that an automatic transmission service should do as per the owner’s manual or at least every 1,00,000 Kilometers.

Automatic transmission service of car oftentimes ignored and the period of time (or space) of the service is different from model & year

You can check which automatic transmission is best for if you are planning to buy one

Auto transmission service includes:

• Changing transmission fluid
• Replacing the Oil filters
• Checking for leaks in transmission
• Replacing Oil Seals if there are leaks
• Road testing for shift pattern and driveability problems
• Adjustments where applicable.

Your automatic transmission carries the power by the engine to the wheels via drive shafts and operates at extreme temperatures.

It is these extreme temperatures along with general wear and tear that cause transmission fluid to burn and become contaminated

If your automatic transmission service is not done it will result in poor driveability and even slippage and no drive.

If you Don’t know how to check your automatic transmission fluid you can check here

Below is a photo of the burnt clutch plates vs new Clutch plates after automatic transmission service

However First Lets Check how Automatic Transmission Works

Automatic transmissions provide the level of (high) quality needed to convert your engine’s power and torque

Then redistributed for different purposes including reversing, highway driving, and city driving.

As a result (making two or more things look the same or happen at the same time) wheel rotations, the car’s weight distribution, and wheel-speed rotations.

Gears change/differ in size, positions, and setup to make the most of their interlocking teeth and allow the engine’s power to direct to changing the direction the car

(making two or more things look the same or happen at the same time) wheel rotations, the car’s weight distribution, and wheel-speed rotations.

But modern automatic transmissions are electronically controlled and have sensors within the transmission 

Which monitor everything from vehicle speed to engine load and (pedal that speeds up a car) position.

However The information from these sensors commands the Mechatronic to manage the gear shifting process.

Final Tips

So basically you should never FLUID FLUSH YOUR Automatic Transmission you just want to drop your pan, change the filter, and refill.