grease monkey 
noun informal
A mechanic.Although university educated in his own country, here he is a grease monkey....
- A Preston university student has taken a year out to become a grease monkey for the Formula Renault motor racing team.
- We always teased him about his stint as a grease monkey, but looking at this, I'd say it paid off.
- inveigle
- inveiglement
- invent
- invention
- Invention of the Cross
- inventive
- inventively
- inventiveness
- inventor
- inventory
- inventory control
- inventress
- inver
- inveracity
- Invercargill
- Inverness
- inverse
- inversely
- inverse proportion
- inverse ratio
- inverse square law
- inversion
- inversion layer
- inversion temperature
- inversive