Re: Twin Ultramatic Range?

Posted by BH On 2013/12/6 17:39:29

Yes, backing off the gas pedal to alleviate such moan/groan is symptomatic of a condition involving the converter clutch lining material.

In that regard, it doesn't matter whether you use Drive or High range. Sooner or later, the trans will shift into Direct Drive, but perhaps the different speed/RPM at which that occurs is helping to skirt the condition (for the time being).

Maybe the old gal just needs some exercise. Otherwise, you might find some relief - as others have reported - by draining the trans and converter and refilling with Type F fluid.