The human being always requires care and with the car it is not a bit different. The car needs special care and among them is the car engine actually can not walk never without oil.
The car engine seen from the outside consists of a single block, but inside the computer, the car engine has moving parts so they provide the car engine flywheel rotation and how these are made of metal alloys it means that they need lubricating oil, as it will not cause an intense wear of these parts and the result is a car engine without life as a car engine does not last without oil.
A car engine that operates without oil present quickly problems such as noises and even locking machine that is driven by wear. This wear will result in overheating and even the casting of parts.