transmission fluid
The fluid that keeps the car’s gearbox moving smoothly has turned a dark brown color, meaning it’s dirty and needs to be changed.
Transmission fluid lubricates the gearbox; when it turns chocolate brown, it indicates contamination and wear, signaling a need for replacement.
Hear It Discussed
"The main ingredient used to make synthetic oil and other lubricants, such as transmission fluid."
Is The Synthetic Oil Shortage Here? In Wheel Time Podcast: Your Go-To Automotive Talk Show
"And it's possible that something simple like your low on transmission fluid [1211.0s] Is causing the problem."
#2644: Who's the Bigger Slob? The Best of Car Talk
"...he said to me multiple times I smell transmission fluid from your car. Now everything seemed okay."
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Episodes Mentioning "transmission fluid"
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The Best of Car Talk
The Car Show with Dane Donovan - 5/30/2026
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#2643: Breaking-in the Brakes
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Is The Synthetic Oil Shortage Here?
In Wheel Time Podcast: Your Go-To Automotive Talk Show
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Ron Ananian, The Car Doctor - May 23, 2026 - Hour 1 - The $16,000 Transmission
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