I jst do regular oil change and tuning... like plugs, valve adjustment, air filtr cleaning or chang and once injectors were also cleaned with petrol.....
And my car was giving 16 to 17 km pr liter..... then i hv installed cng.... on cng per km cost is about 3 to 4 rupees. While on petrol it ws 6 to 7 rupees pr km.... the difference u can see ..... and here in k.p.k there is not a big issue while getting cng full once or twice in a week. Alhmdollillah....
Btw i hv installed cng aftr running 10000 km on stock setting of petrol
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