Car Tips

Signs Of Too Much Transmission Fluid (and What To Do)

Transmission fluid plays a vital role in the functioning of your vehicle’s transmission. It lubricates the moving parts and helps keep the transmission cool. But too much of a good thing can be harmful, and the same goes for transmission fluid. In this article, we’ll explore the signs of too much transmission fluid and what you can do about it.

What are the signs of too much transmission fluid?

There are several signs that your vehicle may have too much transmission fluid:

  1. Leaking fluid – One of the most obvious signs of too much transmission fluid is leaking fluid. If you notice a puddle of red fluid under your car, it could be a sign that your transmission fluid is overfilled.
  2. Slipping gears – Too much transmission fluid can cause your transmission to slip between gears. You may notice that your vehicle struggles to accelerate or shifts gears erratically.
  3. Transmission overheating – Overfilled transmission fluid can cause your transmission to overheat, leading to serious damage. If you notice that your transmission is running hot or your vehicle’s warning light comes on, it’s important to address the issue right away.
  4. Foaming fluid – When there’s too much transmission fluid, it can create foam, which can reduce the fluid’s effectiveness. You may notice that the transmission fluid appears frothy or has bubbles in it.
  5. Burning smell – Overfilled transmission fluid can cause your transmission to overheat, which can lead to a burning smell. If you notice a burning smell coming from your vehicle, it’s important to have it checked out right away.

What should you do if you have too much transmission fluid?

If you suspect that your vehicle has too much transmission fluid, there are a few things you can do:

  1. Check the fluid level – The first step is to check the transmission fluid level. You can do this by using the dipstick, which is usually located near the back of the engine. Make sure the engine is warm and the vehicle is on level ground before checking the fluid level. If the level is too high, you’ll need to drain some of the fluid.
  2. Drain the excess fluid – If the fluid level is too high, you’ll need to drain some of the fluid. You can do this by removing the drain plug from the transmission pan and allowing the excess fluid to drain out. Make sure you have a container to catch the excess fluid.
  3. Take your vehicle to a mechanic – If you’re not comfortable draining the excess fluid yourself, or if you notice any other signs of transmission issues, it’s important to take your vehicle to a mechanic. They can diagnose the problem and make any necessary repairs.

How can you prevent overfilling your transmission fluid?

Preventing overfilling your transmission fluid is simple:

  1. Read your owner’s manual – Your owner’s manual will tell you how much transmission fluid your vehicle requires. Make sure you follow these guidelines.
  2. Check the fluid level regularly – It’s important to check your vehicle’s transmission fluid level regularly to ensure that it’s at the appropriate level.
  3. Have your transmission serviced regularly – Regular transmission service can help prevent issues like overfilling and overheating. Your mechanic can advise you on the appropriate service intervals for your vehicle.


In conclusion, too much transmission fluid can cause serious issues with your vehicle’s transmission. If you notice any signs of overfilling, it’s important to address the issue right away. By following the tips outlined in this article, you can prevent overfilling your transmission fluid and keep your vehicle running smoothly.

Rachael McAdams

I'm Rachael, CEO of AutoGeeX, bring unrivaled expertise and passion to the automotive industry. With extensive knowledge and a deep understanding of cars, she shares captivating tales, invaluable insights, and practical tips with readers. As an active presence in the car community, Rachael ignites excitement, revolutionizing the automotive landscape with AutoGeeX's pursuit of perfection.

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