I have a '96 Buick Skylark with a 3.1L V-6. It has been using a quart of transmission fluid in less than 100 miles. There is no smoke to indicate that it might be getting sucked into the vacuum modulator like in the old days. (Does it even have one?) There is also no evidence of it leaking onto the …

Transmission fluid is disappearing, no leaks evident

transman618 August 31, 2010, 7:00am 2

Your trans should have a modulator, remove the vacuum line going to it and see if it is wet inside or any fluid is leaking out of the modulator. The only other place it could be going is in the radiator from a ruptured cooler.

transman