Why does the car's transmission degrade quickly even though the oil is changed regularly?

Many car owners wonder: they still change the transmission oil on time, but after a period of operation, the car still shows symptoms such as gear jerking, engine stalling, shifting gears less smoothly... The problem is not only in the time to change the oil, but also in how to choose it. suitable oil and oil change process.

1. Using oil that does not meet standards

Not all transmission oils are suitable for all vehicles. Using the wrong type of oil – for example, ATF oil instead of a CVT transmission, or choosing the wrong viscosity index – can increase friction, reduce lubrication efficiency and damage the transmission sooner than expected.

Advice for garages: Always check the manufacturer's recommended specifications and use products that meet OEM standards or equivalent.

2. Do not completely drain the old oil

When changing the oil without completely draining the old oil, dirt, metal filings and old oil that has lost quality will continue to remain and directly affect the transmission's ability to operate.

Note to the garage: Prioritize using an automatic oil changer or combine blowdown and cleaning of the oil system to ensure complete cleanliness before refilling with new oil.

3. Skip changing the transmission oil filter

Many garages and car owners do not change the transmission oil filter when changing the oil. Meanwhile, a dirty oil filter will cause the new oil stream to quickly become contaminated with sediment, reducing lubrication efficiency and increasing the risk of transmission wear.

Recommended: For vehicles with a separate oil filter or filter in the transmission, it should be checked and replaced periodically according to the vehicle manufacturer's recommendations.

4. Do not choose oil with protective additives in hot and humid climates

With the weather conditions in Vietnam, gear oil is easily oxidized, reducing protection effectiveness.

If you use oil without anti-oxidant additives, the gearbox will quickly degrade, even if the oil change schedule is still on time.

5. Solution: Choose the right oil - Change properly

Gartz transmission oil lines such as ATF G4, Gartz G6, nice Gartz 9G-HP Manufactured in Singapore using German technology, has high oxidation resistance, heat stability and is suitable for tropical climates.

The product is suitable for garages that want to improve service quality and create long-term customer trust.

Gartz – Accompanying garages to improve transmission care services
To get advice on the appropriate oil line for each type of gearbox, contact Gartz to receive a detailed technical data sheet.