IS IT A PROBLEM NOT TO CHANGE YOUR TRANSMISSION FLUID? THE TRUTH MANY PEOPLE OVERLOOK

I. WHY DO MANY PEOPLE NOT CHANGE THEIR TRANSMISSION FLUID?

One of the common misconceptions is:

- Transmission fluid "does not need changing"

- If the car doesn't have any problems, there's no need to check it yet.

- It can be used for the "lifetime of the car".

This stems from:

- The concept of "lifetime oil"

- Lack of understanding of the gearbox mechanism

- The car was running normally in the initial phase.

But in reality, transmission fluidIt doesn't break down immediately, but deteriorates gradually..

II. HOW DOES TRANSMISSION FLUID DEGRADE?

Transmission fluid performs multiple tasks simultaneously:

- Lubrication

- Hydraulic pressure transmission

- Friction control

- Cooling

Over time, the oil will:

- Loss of antioxidant additives

- Diluted by heat

- Deterioration and discoloration

But the danger is:

- The car was still running – so many people didn't realize it.

III. WHAT HAPPENS IF YOU DON'T CHANGE THE TRANSMISSION FLUID?

1. Shifting gears is not smooth.

- Slight jerk when shifting gears

- There is a delay when entering D or R.

Because the oil is no longer stable enough to withstand friction.

2. Increase the transmission temperature.

- Oil has poor cooling properties.

- Friction increases

Rising temperatures cause oil to degrade more quickly.

3. Component wear and tear

- The clutch is worn out.

- The valve body is stuck.

- CVT pulley is slipping

This is a dangerous phase.

4. Risk of gearbox overhaul

If you continue using it:

- CVT belt failure

- Clutch failure

- Loss of power

- Repair costs can be very high.

IV. WHY IS THE CAR NOT SHOWING ANY ERRORS?

Automatic transmission:

- No oil quality sensor

- No warning when oil degrades

This has led to many misunderstandings:

"If the car isn't broken, it doesn't need an oil change."

But the reality is:

The damage started very early on.

V. CONDITIONS IN VIETNAM CAUSE OIL TO DEGRADE MORE QUICKLY

Compared to standard conditions:

- Frequent traffic jams

- High temperature

- Running slowly continuously

- Transmission fluid in Vietnam degrades significantly faster.

VI. HOW OFTEN SHOULD I CHANGE MY TRANSMISSION OIL?

Practical recommendations:

- AT: 40.000 – 60.000 km

- CVT: 30,000 – 50,000 km

If the vehicle:

- I drive a lot in the city.

- Frequent traffic jams

- It should be replaced sooner.

VII. CONCLUSION

Not changing the transmission fluid won't cause immediate problems.

But the consequences will come in stages:

- Reduce smoothness

- Increased wear and tear

- Faulty component

Changing your oil at the right time is the simplest way to:

- Gearbox protection

- Reduce repair costs

- Maintaining the vehicle's long-term operational stability.

Learn more:
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