It prevents high friction metal-on-metal contact.
By lubrication and using polished surfaces and avoiding the striking mechanism of 2 parts in an engine...
Lubrication.
Because oil is vital for lubrication and cooling of the pistons, and without it, the engine would seize and be ruined.
so they can move
To filter out any small particles from the lubrication system. Even the slightest piece of debris will harm the bearings, pistons, and rings in an engine.
The engine has an oil pan under it that holds oil. In many cars, there is also oils for transmissions and other various moving parts that need lubrication.
Inside the engine lubrication system.
The function of the bearing in a combustion engine is to offer lubrication.
it is too squease all the fluids into the engine too allow lubrication of the body this lubrication creates extatic movement allowing for a senstational ride
Oil is mixed with Petrol in what is known as a 2 cycle engine. This type of engine has no lubrication built in (as say an oil tank on a 4 cycle engine) so as the fuel/oil mixture burns lubrication is provided to the cylinder.
minimize friction,wear and cool the engine
answer simple. for lubrication