On Sep 22, 2017, at 12:07 PM, KB wrote:

> The only problem with the glyptal is it's insulating.


Glyptal is an *electrically* insulating coating that was developed to coat parts that operate at high voltages such as in transformers, motors, generators or other electrical gear. "Insulating" - at least in terms of glyptal - refers to its electrical properties and not its thermal properties. A mm-thick or so coating isn't going to make any difference at all in the ATF temperature.

And I, too have had an uncoated Ragusa pan that weeped ATF. JimK sent me another one that did not weep.

I would not hesitate for a second to coat the inside of a new tranny pan with Glyptal - it is used inside of engines fairly often.