Corrosion so badly attacked your old bolts that they seem unrecoverable?
Coca gives your old tools a second youth.
The mechanic thing to remove the rust on the parts of his workshop:
Once a year, gather your tools for a little makeover.
Immerse them in a bucket of Coca-Cola overnight.
Retrieve your instruments and immerse them in a bath of soapy water (to remove the sugar).
Then rinse with clean water.
Wipe it off immediately.