Dear all
Finally after the appointment with a local mechanic, my colleagues say he is good, I took my car today to him.
He lifted the car, looked all over and said oil is everywhere. Since oil is everywhere he said he can't diagnose anything at this moment.
He asked me to leave the car for a day, when he will clean the oil from the engine and will see from where its leaking. Since he couldn't diagnose it at this moment he couldn't tell the estimates too :(
For now, I am keeping my finger cross, I am going to leave my car to him on Monday and then gonna see what happens.
Between I am going to put a paper or sheet under my car and will see if oil is dripping from there.
Thanks everyone, will catch all of you ASAP.
Have a nice weekend.