Nothing but nothing lubes a chain better than boiling in grease.
Done it all my life and get excellent service from all my chains & sprockets.
Trick is to run 2 or more ( I run 4 ) chains at a time.
Drag the lubed chain through and pop the clip back on takes few minutes.
Drop the old chain into some solvent to clean properly then at a latter date boil it up and pop it back in the tin after it has hardened and it will be ready for the next time.
Generally do the chains 2 at a time.