Your car’s transmission ensures your vehicle runs properly, but it’s often overlooked when it comes to regular maintenance. While we’re used to hearing about oil changes and tire rotations, changing your transmission fluid can be just as important. Ignoring it could lead to major performance issues. But how do you know when it’s time to change transmission fluid?

Unusual Noises When Shifting Gears

One of the first signs that your transmission fluid may need a change is hearing strange noises when shifting gears. If you notice a grinding or whining sound when you’re driving, especially during gear changes, it’s a sign that something isn’t right. Transmission fluid is essential for lubricating the components inside the transmission. When the fluid gets old or dirty, it loses its ability to protect these parts, leading to metal-on-metal contact, which can result in that unsettling noise. If left unchecked, this can cause damage to the transmission itself.

Delayed or Sluggish Gear Response

Have you ever stepped on the gas only to feel a delay before your car moved? Or perhaps when shifting gears, it feels like the vehicle is hesitating before responding? This sluggish behavior can be a sign that your transmission fluid has become too thick or dirty to do its job effectively. Fresh transmission fluid allows for quick, smooth gear changes, but when the fluid is past its prime, it can hinder your car’s performance. If your car isn’t responding as it should when shifting gears, it’s probably time to check your transmission fluid.

Overheating Transmission

Transmission fluid doesn’t just lubricate—it also cools. If your transmission is running hotter than usual, it may be because the fluid is no longer able to regulate the temperature effectively. Overheating can lead to increased wear and tear on the transmission components and, in extreme cases, can cause total failure. Pay attention to any signs of overheating, such as a burning smell, as this could indicate your transmission fluid is breaking down and needs replacing.

Leaking Fluid

Transmission fluid leaks are another common sign that a change is due. If you notice red or brown fluid pooling under your car, it’s likely a transmission fluid leak. Not only does this indicate a problem with the seals or gaskets, but it also means your transmission is operating with less fluid than necessary. Low fluid levels can lead to overheating and decreased performance. If you spot any leaks, get them checked out immediately to prevent more significant issues down the line.

Dirty or Discolored Fluid

Transmission fluid should be clear and reddish in color. Over time, however, it can become dirty, dark, and filled with debris. This contamination affects the fluid's ability to function properly. You can check the fluid by inspecting the transmission dipstick. If the fluid appears dark brown or black and has a burnt smell, it’s a clear indication that it needs to be replaced. Running your vehicle on dirty transmission fluid will reduce its lifespan and lead to costly repairs.

Unexplained Gear Slipping

Another red flag is gear slipping. If your car randomly shifts in and out of gear while you’re driving or if it slips into neutral for no reason, your transmission fluid might not be doing its job. Inadequate or degraded fluid can lead to inconsistent pressure in the transmission, causing gear slippage. This is a safety concern and should be addressed promptly, as it can make your vehicle unpredictable on the road.

When to Change Your Transmission Fluid

So, how often should you change your transmission fluid? This depends on your vehicle and driving habits, but as a general rule, it’s a good idea to check your owner’s manual for manufacturer recommendations. Many experts suggest a transmission fluid change every 30,000 to 60,000 miles. However, if you’re noticing any of the signs mentioned above, it may be wise to get it checked sooner rather than waiting for the mileage to add up.

Not sure if your transmission fluid needs changing? Bring your vehicle to Crowell Brothers Automotive. Our experienced technicians will inspect your car and recommend the best solution to keep you safely on the road.