Does anyone have a 50-year-old car that doesn’t drip a drop of something from somewhere?
Yes I have a 3 60’s mopars that don’t leak a drop. If you have not gone through it all then yes they leak.
Yes the more you use it the more change of developing a leak. Seems to happen. Get on it before the bottom looks like a road Oiler truck and it can stay nice.
If people tell you it can’t be done, it just means they don’t know how to do it, yet.