@ NakedTruth
YEs oil and oil filter fine .me using 20-50 havoline and changed after 3500 kM and change oil filter with every oil changed .
Yes Car is missing on petrol on first to second gear .but excellent mileage and pick on CNG .
@capsat
Sir i recently overhaul my engine...approx 6 month ....
Sir For ur info if we change the mixture with new one after 10 to 15 KMs new mixture from tip have some jahri .if u change mixture again with new one again same jahri problem appear....