A slang name for the skin on the elbow is "elbow grease."
I used so much elbow grease when I tighten the bolt the wrench slipped off it.
That is not idiomatic. The idiom is "elbow grease" which means "exertion" comparing it to a bottled product."You can get that brass to shine if you use more elbow grease." means "Polish harder and the brass will shine."
The car that the person is building will be in their garage in order to give them elbow grease you have to click on the car you wish to give elbow grease. The only exception to this rule is Police Charger that you have to complete in order to finish the Dom's Charger Challenge. I still have not figured out how to give someone elbow grease if it is in the other person's hideout.
elbow grease
The idiomatic term "elbow grease" means to use manual labor to accomplish a task. The "grease" in french fries is usually vegetable oil, but may contain animal fats.
"Elbow grease" refers to hard work or physical effort. While it can be used to polish things through direct application of force, dedicated effort and perseverance are often necessary to achieve the best results in various tasks.
Elbow grease
Elbow grease usually does the job!
elbow grease and determination
When in a bath it is customary to apply soap and elbow grease.
Use fine sandpaper and elbow grease.