I want to get my Neon 95 model sold at some price but it is giving trouble with oil and engine, how to get it repaired at a low price and what would be the exact problem. I already got it repaired at nearby mechanic store but of no use. Kindly help me know what could be the problem.

Obviously the stock warning is to make sure that the car isn't driven without an adequate oil level.

Also, I think it's necessary to know if the oil is leaking from the engine, in which case you can see it on the ground or on the underside of the motor, or if the engine's "using" oil which would mean it's leaking into the air and fuel mixture.

Yes, you really need to find out where the oil is leaking from first? By your post I am not to sure what problem you are having with the oil?

There was some green colored oily leakage in the parking lot where the car is parked. One day we went on drive in it and all of a sudden there was smoke coming out of the fans inside car along with some boiling sounds.