[redmodelt]

There is no drain, you would need to suck the old lube out thru the fill hole. That is why I made the suggestion. The T's I work on are NOT points cars and this is something I have been doing for some time when I rebuild a rear end also have done on a few in place rears. While it can be done, by time you have separated the half's, it would not be much more work to pull the rear and go thru it.