Any fluid material meant to reduce friction between two solid materials can be considered a lubricant. Many components in a vehicle would not operate for more than a few seconds without it.
- Automatic Transmission Fluid
- Crude Oil
- Grease
- Motor Oil
- Motor Oil Additives
- Grease
Types of Lubricants
![Hydrocarbon Molecule Hydrocarbon Molecule](http://carssimplified.com/img/chem/benzene-hydrocarbon-molecule.png)