August 17

How Often Should I get My Transmission Fluid Changed?


One of the most crucial aspects of vehicle maintenance is keeping up with your transmission fluid changes. Transmission fluid plays a vital role in lubricating and cooling the moving parts in your vehicle’s transmission system, preventing potential overheating and transmission failure. So how often should you get your transmission fluid changed? In this article, we discuss the importance of regular maintenance and the differences between changing and flushing your transmission fluid. We also provide guidance on when to perform these services.

Consequences of Ignoring Transmission Fluid Changes

Neglecting to change your transmission fluid can severely affect your vehicle’s performance, longevity, and overall health. Transmission fluid plays a vital role in lubricating, cooling, and protecting the many moving components in your car’s transmission system.

Overheating and Friction

Old or degraded transmission fluid loses its ability to cool the transmission effectively. This increased friction between moving parts puts additional strain on the transmission, resulting in accelerated wear and tear on gears, bearings, seals, and other critical components. As a result, your vehicle’s transmission may overheat, causing significant damage to the transmission system.

Formation of Sludge and Deposits

Over time, contaminants, such as dirt and metal shavings, can accumulate in the transmission fluid. These particles form sludge and deposits that clog up the delicate channels within your vehicle’s transmission system. This buildup restricts the flow of fluid needed for proper lubrication and cooling, further exacerbating overheating and increasing wear on internal components.

Poor Shifting Performance

Old or contaminated transmission fluid may cause erratic shifting or slipping gears in automatic transmissions. Poor shifting performance affects your vehicle’s acceleration, fuel efficiency, and overall drivability.

Reduced Fuel Efficiency

As mentioned, ignoring regular transmission fluid changes can lead to poor shifting performance. This inefficiency directly impacts your vehicle’s fuel consumption, reducing miles per gallon and costing you more money at the pump.

Complete Transmission Failure

In extreme cases, ignoring regular maintenance, such as neglecting to change your transmission fluid, can lead to complete transmission failure. This catastrophic outcome often requires expensive repairs or a full transmission replacement, costing thousands of dollars.

It’s crucial to adhere to the recommended transmission fluid change intervals in your owners manual to avoid these issues and maintain optimal vehicle performance. Regular maintenance not only extends the life of your vehicle but also helps prevent costly repairs down the road.

Factors Affecting Transmission Fluid Change Intervals

The frequency with which you need to change your transmission fluid varies depending on several factors, as follows:


Extreme temperatures can affect the performance and degradation of transmission fluid. Hot climates may cause the fluid to break down faster, while cold climates can lead to increased condensation within the transmission system, leading to corrosion. Adjusting your maintenance schedule accordingly to account for these factors is crucial.

Traffic Conditions

Driving in heavy traffic or frequently stopping and starting can strain your vehicle’s transmission system. This increased wear and tear may require more frequent transmission fluid changes to maintain optimal performance.

Vehicle Usage

Using your vehicle for towing or off-road activities burdens the transmission system, increasing the likelihood of overheating and premature wear. In such cases, changing your transmission fluid more frequently is recommended.

General Guidelines for Transmission Fluid Change Intervals

While specific intervals vary depending on the above factors, the general advice is to change your transmission fluid every 30,000-45,000 miles or every five years. This may change based on your vehicle’s make and model, so it’s essential to consult your owners manual for specific guidance.

For example, for almost all 2023 Chevrolet models, Chevy recommends changing the transmission fluid every 45,000 miles.

You can find more detailed information on your vehicle’s recommended maintenance schedule in the Chevrolet manuals and guides.

How To Check Your Transmission Fluid

Regularly monitoring the condition of your transmission fluid is crucial to preventing a buildup of grime and contaminants and the associated costly repairs. To check your transmission fluid, follow these steps:

  1. Park on a level surface and start your engine.
  2. Locate the dipstick (consult your owners manual if you’re unsure of its location).
  3. Remove the dipstick with a clean cloth or a paper towel.
  4. Reinsert the dipstick fully before removing it again.
  5. Observe the color and smell of the fluid on the dipstick.

New transmission fluid should be a vibrant red color. If the fluid appears murky, dark red or brown in color, it’s likely time for a change. A burnt smell could also indicate the need for a transmission fluid change.

Remember that there are now over 15 different types of transmission fluid on the market. It’s vital to consult your owners manual or online resources to determine the right kind of fluid for your specific vehicle.

Transmission Fluid Change vs. Flush: Pros and Cons

When it comes to maintaining your vehicle’s transmission system, you have two main options: a transmission fluid change or a transmission flush. Both methods have their advantages and disadvantages.

Transmission Fluid Change

A transmission fluid change involves draining the old fluid from the system, fitting a new transmission filter, and adding new fluid. This process removes much of the buildup within the system, but some old fluid will remain.


  • Cheaper than a flush.
  • Removes most contaminants from the system.
  • Can be performed by vehicle owners with basic mechanical skills.


  • Doesn’t remove all old fluid and contaminants.
  • May require more frequent changes.

Transmission Fluid Flush

A transmission flush completely removes all old fluid from your vehicle’s transmission system and replaces it with fresh fluid. This comprehensive cleaning allows the transmission to run more efficiently and smoothly.


  • Completely removes all old fluid and contaminants.
  • Promotes smoother shifting and improved performance.


  • More expensive than a transmission fluid change.
  • Requires specialized equipment typically found in professional service centers.

Ultimately, deciding between a transmission fluid change or flush depends on your vehicle’s condition, maintenance history, driving habits, and budget. Consult with a trusted mechanic to determine which option is best for you.

Schedule Your Transmission Fluid Service

Ensuring timely transmission fluid changes is crucial for maintaining your vehicle’s performance and longevity. Investing in regular maintenance is a smart decision whether you require a fluid change or a comprehensive flush. Entrust your transmission service needs to our experienced technicians at Huffines Auto in Plano, Texas. Or if you’re in need of a vehicle, explore the wide range of cars in our new inventory.


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