Should Your Car Be Running When Adding Transmission Fluid?

There is some debate over whether or not your car should be running when adding transmission fluid. Some people believe that it is necessary to have the car running so that the fluid can circulate through the transmission, while others believe that it is not necessary and may even be harmful to the transmission.

Arguments for running the car

• The fluid can circulate through the transmission, ensuring that all of the components are properly lubricated.
• The fluid can reach the torque converter, which is an important component of the transmission.
• The engine’s heat can help to thin the fluid, making it easier to add.

Arguments against running the car

• The transmission fluid can become aerated, which can damage the transmission.
• The engine’s heat can cause the fluid to expand, which can lead to overfilling.
• It is more difficult to check the fluid level accurately when the car is running.

So, should you run your car when adding transmission fluid?

Ultimately, the decision of whether or not to run your car when adding transmission fluid is up to you. There are valid arguments to be made on both sides, and you should weigh the pros and cons before making a decision.

If you do decide to run your car, be sure to do so in a well-ventilated area and take precautions to avoid spills or leaks. It is also important to check the fluid level carefully before and after adding fluid, to avoid overfilling or underfilling the transmission.

If you are not comfortable running your car, you can always have the transmission fluid added at a mechanic. This is a relatively inexpensive service, and it can give you peace of mind knowing that the fluid was added correctly.

Conclusion

Whether or not to run your car when adding transmission fluid is a decision that you should make based on your own circumstances and preferences. There are valid arguments to be made on both sides, so it is important to weigh the pros and cons before making a decision.

If you do decide to run your car, be sure to do so in a well-ventilated area and take precautions to avoid spills or leaks. It is also important to check the fluid level carefully before and after adding fluid, to avoid overfilling or underfilling the transmission.

If you are not comfortable running your car, you can always have the transmission fluid added at a mechanic. This is a relatively inexpensive service, and it can give you peace of mind knowing that the fluid was added correctly.