Re: Trans Fluid for a twin ultramatic?

Posted by HH56 On 2011/9/20 14:30:33

There doesn't seem to be a fluid labeled as absolutely 100% compatible with all cars. Unless you are going to change the fluid, I think it would be best to find out what is in there now and buy appropriately.

As Brian mentioned in his FAQ thread referenced above, If you do change fluid, then type F or one of its later compatible blends has been the standard fluid used in a properly functioning Ultramatic for years--even with rebuild parts. The trick shift has been reported to be an excellent choice as well..