I am sorry everyone, if I am posting this in middle of some discussion but someone suggested to post here to get an expert advice.
One of my very close friend has 2007 City iDSI (bought a couple of months back) only Patrol (no CNG). Current mileage on meter is around 120K.
He went to Honda 3S and get the engine full checkup/cleanup and tuning, tappet, throttle, fuel injector, etc. The mechanic said that Cylinder 2 is getting week and Plugs at number 2 have slight oil in it. Rest of the plus were ok, he said that engine is week and might need overhaul he suggested to get the oil change after every 2500km.
Engine still throwing some water (but not much as compared to new engine) from exhaust, not much black in the exhaust and no smoke, no oil decrease in last 1000KM, so does that mean it still can give him some mileage?
What should he do to maintain this week engine till max. life.
Need list of suggestions and precautions.