Lubricates and cools the moving metal parts. and helps keep your engine running smoothly
No it may make it run more smoothly.
No, but you need to make sure that whenever you decide to run that engine in a car you have oil in it.
A little, yes; you want the oil to be warm rather than cold. Running the car too much will make the oil and the engine dangerously hot.
Ive heard it can run of vegetable oil but not olive oil.
Vegetable oil, actually.
Yes, always make sure when you change oil in a car it is off otherwise if you don't you could get hurt by sticking your hand up in the motor changing the filter. And also the oil is to make the engine run smooth if you don't have oil in your car it will cause the piston to rub again the valves and could cause damage, and it could even blow your motor.
The muffler makes your car run quiet
no old oil will not stop a car beacause at least the car has oil
To make your car more energy efficient, you will want to regularly change its oil. Old oil tends to clog up the engine and may cause the car to run harder than it normally would. Because of this, you will wind up spending more money on gas in the long run. A good oil change will get rid of the old oil and will clear the engine so that is runs better.
When you run your car low on oil you increase the instance of burning your motor. If your motor burned out your car won't work.
the answer is oil
chip oil or fat