Should Your Car Be Running When You Add Transmission Fluid?
Typically, you should check your transmission fluid at least once a month, but should your car be running if you need to add more? Here's what you need to know.
![Should Your Car Be Running When You Add Transmission Fluid?](https://www.slashgear.com/img/gallery/should-your-car-be-running-when-you-add-transmission-fluid/l-intro-1716400845.jpg?#)
Typically, you should check your transmission fluid at least once a month, but should your car be running if you need to add more? Here's what you need to know.
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