The first winter fix has been to replace the gasket in my Ford 9" rear. I used the wrong sealer when it was put together the first time and the gasket leaked. So new metal gasket and sealer this time. While I was in there I found what turned out to be pieces of a rolled pin in the oil. Checked and found the location and replaced it too. I have no idea why it would have broken unless the guy that did my overhaul hit it once too hard. I could find no other damage, from the pin or anything else.
Now it's on to the disc brake brackets. They need to be clocked back for better bleeding.