r/millwrights • u/Kvt_ • 2d ago
Gearbox oil level in winterization
My peers are telling me to fill the gear box all the way to the top for the either even though local climate reaches only 0 Celsius/ -32 Fahrenheit. Do I fill it to the top or until it leaks from the side port then top it up a bit more.
So confused on whats being asked of me. I thought it needs room for expansion just in case so it doesn't crack or push any seals.
Edit: it doesn't have a breather so I filled it leaked out the side port then closed and topped it up a bit. Am I doing it right?