Do I have to drain transmission fluid before adding Trans Tune? [SOLVED]

Do I have to drain or siphon out some transmission fluid if the fluid level is full before adding Trans Tune?

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Jim D.
Jim D.
10 months ago

As long as the transmission fluid is not overfilled, it’s okay to add Trans Tune without draining. Transmission systems have capacity for an extra 16 ounces. Just double-check to make sure it’s not overfilled according to the marker before or after…