Automatic transmission fluid is red, but it goes much deeper than that. Advanced Automotive advises that automatic transmission fluid changes colors as it ages, and these color changes can be used as a guide as to when the fluid needs to be changed. On average, transmission fluid lasts about 30,000 miles. After this time, it’s important to change the fluid to ensure it properly protects and cleans the transmission. Failure to change the fluid can cause transmission damage. More on this below.
Red
As we said above, your automatic transmission’s fluid should be red, see-through, and bright. Fluid that is in this condition is doing its job properly, and the transmission fluid in your automobile has two jobs. First, the fluid protects the transmission by lubricating moving parts and gears. Second, it helps the transmission shift gears by acting as a hydraulic fluid. Your goal should be to have red and translucent fluid in the transmission at all times.
Orange
Once the transmission fluid starts to age, which is between 20,000 and 30,000 miles, it will turn orange or light brown. This is a sign that the transmission fluid is getting dirty and starting to burn a little bit. As long as the fluid is either of these colors, you haven’t caused any damage to your transmission. You can get a few more miles out of the fluid before it needs to be changed.
Brown
Once the fluid turns brown, however, it needs to be changed right away. Brown transmission fluid is dirty and oxidizing, which means it is starting to fill up with tiny air bubbles. These bubbles prevent the transmission fluid from doing its job, and you will notice the gear shifting is starting to get a bit rough.
Black
If you don’t change your brown transmission fluid, it will oxidize completely and turn black. Now, you are damaging your transmission. This opaque fluid will build up on the transmission parts and prevent the transmission from shifting gears seamlessly. Don’t let your transmission fluid turn dark brown or black. Have it changed before it reaches this life stage.
Pink
Finally, and as an aside, if your automatic transmission fluid is pink, you have a damaged transmission. Pink transmission fluid is transmission fluid and coolant mixed together. This is a result of a breach between the two systems. Driving your automobile will overheat it and damage the transmission.
Advanced Automotive in Stanwood, WA, would be happy to change your transmission fluid if it’s been 30,000 miles since your last flush and refill. Call us today to schedule a service appointment.
