My "new to me" 3 speed overdrive from a '57 Chevrolet (muncie 319(318)w/borg warner r-10 overdrive) had what appeared to be some silicon that was most likely used to seal a leak. In the picture below, you can see that of the two round holes in the middle the one on the right has been sealed and the one in the middle was sealed with a much more crude attempt. I pulled it all off. Is this a known area of leakage? How difficult would it be to keep this area from leaking? Would putting a type of sealant back on it be an adequate solution?

Picture of Leaky Area

Thanks,
Brandon

Last edited by Vetteman61; 08/06/2016 4:44 AM. Reason: forgot to add picture