Transmission fluid is a crucial component of your vehicle’s transmission system. It helps to keep your transmission lubricated, cool, and free of contaminants that can cause damage. Over time, however, transmission fluid can break down and lose its effectiveness, leading to transmission problems and even failure. In this blog post, we’ll discuss the importance of changing your transmission fluid and provide a guide to help you keep your vehicle running smoothly.
Why Change Your Transmission Fluid?
Transmission fluid is subject to wear and tear just like any other fluid in your vehicle. As it ages, transmission fluid can become contaminated with dirt, debris, and metal shavings from the transmission. This can cause friction and heat, which can damage your transmission over time. Additionally, old transmission fluid can cause sluggish shifting, reduced fuel economy, and even transmission failure.
When Should You Change Your Transmission Fluid?
The frequency at which you should change your transmission fluid depends on several factors, including the make and model of your vehicle, driving conditions, and the type of transmission fluid used. In general, most manufacturers recommend changing your transmission fluid every 30,000 to 60,000 miles. However, it’s always a good idea to check your owner’s manual for the manufacturer’s recommendations.
How to Change Your Transmission Fluid
Changing your transmission fluid is a relatively simple process that can be done at home or by a professional mechanic. Here are the basic steps involved in changing your transmission fluid:
- Locate the transmission fluid pan: Your transmission fluid pan is typically located underneath your vehicle, near the transmission.
- Drain the old fluid: Place a drain pan underneath the transmission fluid pan and remove the drain plug to allow the old fluid to drain out.
- Replace the filter: Remove the old transmission fluid filter and replace it with a new one.
- Refill with new fluid: Refill your transmission with the manufacturer-recommended type and amount of transmission fluid.
- Check the fluid level: Start your vehicle and let it idle for a few minutes. Check the transmission fluid level and add more fluid as needed.
Changing your transmission fluid is a simple but important step in keeping your vehicle running smoothly. By following the manufacturer’s recommendations for changing your transmission fluid and performing regular maintenance, you can help prevent transmission problems and extend the life of your vehicle. If you’re not comfortable changing your transmission fluid yourself, be sure to consult a professional mechanic to ensure the job is done properly.

Patrick M. is Editorial Director for the always expanding DriveSafe Online library of courses. With over two decades of experience developing award-winning training, he now focuses on innovating online driver safety training. Pulling from his background in journalism, he steers the wheel behind the creation of top-tier content that promotes a better journey—whether on the digital highway of learning or the real roads we travel every day.