well, I do agree with u, so many sources r there to create noise, I tried to find out but diffirent mechanic says its normal, some says your camshaft creating noise, some says its head valves r creating noises.......
so im not satisfied with the ans, jitnay moun utni batain
well now let me tell u the method by measuring the oil.
after driven the car around 2000 to 2500 kms, i need to top up the upper mark of dipstick wich has been reduce a little from upper mark of dipstick
then i have to pour around 100 to 200 ml for top up
I purchase 4Lt oil, car takes around 3.7 ltr , I keep remaining oil for topup