what is a good engine oil to use in my car
no its not good
Depends on how worn the engine is. An engine in good condition won't hardly use any oil at all, maybe a cup or so, while there's virtually no limit to how much oil a worn engine can consume.
Use what the manufacture suggests. Consult the owners manual for the correct oil for the engine.
For use as an engine lubricant - no.
The engine dipstick is the only tool you can use to measure how much oil is in the engine.
so the car engine will perform using oil.
No, you cannot use ordinary car engine oil. Use a JASO MA or MA2 approved oil, or SAE SF or SG graded oil.
You will have excess engine wear. Look at it this way. The engineers designed the engine in your car. They then chose a weight of oil that you should use. You decide to ignore them and use something else. What exactly do you think will happen? And besides, what good reason do you have for using a weight of oil other than what they recommend? But, it is your car so use what you want, just don't expect good results.
No
No. You need a good 4-stroke oil. Your car oil would protect the engine, but it does not have the ingredients nessecary to protect the clutch and transmission.
No, not unless you want to destroy your engine.
The engine oil to use depends on the type of engine (diesel or petrol). See the car manual to know the exact oil reccomended by FIAT for your car