Transmission Fluid Change: When, Why, and How to Avoid Expensive Repairs

Different types of transmissions require different maintenance schedules. Below are industry-standard reference values (always refer to your vehicle’s owner’s manual for precise recommendations):

Manual Transmission (MT)

• Change every 80,000–100,000 km (50,000–60,000 miles) or every 3 years
• While simple in structure, manual transmissions still need fresh fluid for smooth shifting

Automatic Transmission (AT)

• Change every 40,000–80,000 km (25,000–50,000 miles) or every 2 years
• If you frequently drive in heavy traffic or high-speed conditions, consider changing it sooner

CVT (Continuously Variable Transmission)

• Change every 60,000–80,000 km (37,000–50,000 miles)
• CVTs are more sensitive to fluid degradation and prone to slipping when fluid quality drops

Dual-Clutch Transmission (DSG/DCT)

• Wet-type: Around 60,000 km (37,000 miles)
• Dry-type: Requires more frequent inspection; follow your manufacturer’s service schedule carefully

Watch for these common symptoms:

• Rough, delayed, or jerky shifting
• Poor acceleration or sluggish throttle response
• Unusual noise at high speeds
• Difficulty engaging gears when cold

If you notice any of these, it’s time to check your transmission fluid.

In addition to following mileage and time intervals, you can rely on professional diagnostic tools for accurate fluid health assessment.

We recommend the AUTOOL AS505 Transmission Fluid Tester for precise detection of fluid quality, oxidation level, and water contamination in transmission fluids.

Using a tool like this helps prevent unnecessary replacements and ensures your fluids are changed exactly when needed.

Changing your transmission fluid is not optional—it’s essential for vehicle longevity and performance. Whether you drive an MT, AT, CVT, or DSG, smart maintenance means:

• Considering mileage and driving conditions
• Watching for fluid degradation signs
• Using professional tools for on-the-spot testing

For workshop owners and DIY car enthusiasts alike, the AUTOOL AS505 Transmission Fluid Tester is a reliable and affordable investment. It helps you make accurate decisions on whether a transmission fluid change is needed—reducing unnecessary maintenance costs and minimizing the risk of customer complaints or warranty claims due to neglected fluid service. Welcome to contact online customer service to discuss more details.

Online Support

AUTOOL AS501 Brake Fluid Tester

Transmission Fluid Flush vs. Change: Which Is a Better Choice?

Brake Fluid exchanger, Are You Changing It Right?