Oil the wheels
Definition 1 of 2
Pro Tip 1/3Teamwork Enhancement
Use when describing actions that improve group cooperation and success in tasks or projects. 
Regular team-building exercises help oil the wheels of our project's progress.
Pro Tip 2/3Positive Impact
Emphasizes the beneficial effects someone or something contributes to the function of a system. 
Her extensive experience really oiled the wheels of the new marketing campaign.
Pro Tip 3/3Metaphorical Usage
No actual oil or wheels involved; it's about making processes smoother metaphorically. 
Clear instructions oil the wheels of assembly for the new furniture.