The phrase is never about literal grease or wheels. It's about making situations less difficult.

Figurative Use

Usually used in a positive context where efforts are made to improve processes or relationships.

Often Positive

Greasing the wheels implies a process; the action makes future tasks easier, not instantaneous.

It often involves investing money or resources for the sake of improvement or growth.

While it can involve actual funding, it also refers to any support that helps progress.

This usage implies improper or unethical actions to make something easier.

Be careful; this context can suggest illegal activities like bribery or corruption.

The tone when using this phrase can change its meaning. Sarcasm can imply corruption.