Re: Twin Ultramatic Lifespan.

Posted by Tim Cole On 2022/10/22 9:01:43

I was thinking over this topic the other day and to answer the initial question of the service life of the Twin-Ultramatic; the original owner cars I dealt with years ago were in the 80,000 to 90,000 mile range with the original transmissions when they quit. However, those were cars that were still on the road.

The problem was a huge variance as to quality control. The old timer's summed the situation as follows: "There are good ones and bad ones."

You can't stay in business given a situation like that.

My Ultramatic driving method is much like that used with locomotives. As speed increases the throttle is "notched up" to avoid traction motor burnout.