No prob... that's why we are here.
You want to use Mercury (Quicksilver) High Performance gear lube. (not premium) I'm not normally a fan of a specific oil, but in this case, it's proven. Standard gear lubes can't handle the shear loading, and will break down. Also, it can keep water suspended, and that helps keep the gears and bearings from rusting.
You can get it at any boat shop, gander mountain, and even some wal-marts have it.