“Good tool cleaner”
I used Simple Green to soak and clean returned Craftsman ratchets for years, while working as a store PMT (Preventative Maintenance Technician).
It works real good and doesn't have flammability issues, being water/soap based, that using other solvents can often involve.
It can get years of grime off of the old tools.
Highly recommended.
Search kmart.com
for simple green All Purpose Cleaner prices