Lubricants.
Oil is used to reduce friction.
Oil is mainly used to reduce friction between contacting surface, e.g., metal on metal - not to reduce air friction.
yes.
To reduce the coefficient of friction.
To reduce unwanted friction.
Yes, Oil forms a coating on the cylinder walls to reduce friction and is also used as a coolant to protect engine parts
OIL == ==
There are two most widely used methods to reduce friction__Using lubricants.Converting Sliding Friction into Rolling Friction
Motor oil is used as a lubricant to reduce sliding friction and create a layer of fluid friction, known as hydrodynamic or fluid film lubrication, between moving parts. This helps to reduce wear and heat generated by friction in the engine.
oil or grease
Lubricants are liquids used to reduce friction between surfaces in contact with each other. They help to minimize wear and heat generation in machinery and engines.
To stop friction, a lubricant such as oil or grease can be used to reduce the contact between two surfaces and create a barrier that minimizes friction. Additionally, using smooth surfaces, proper maintenance, and ensuring surfaces are clean can also help reduce friction.