@mkkd : Earlier when I was not getting good millage in fact it was poor, close to 6-7 or even 5-6. Later on I went ahead and got a few things changed and timed, like the new timing belt, it helped me in proper timing of the vehicle. All of the vacuum hoses (pipes) were not properly connected, that too helped the millage. The diesel pump was also replaced it too helped in the millage. had all the nozzles changed, one more thing was the small CPU or electronic fuel processor worth 1500RS which coordinates with the diesel pump I guess. All of these changes have helped improve the millage, now I am getting close to 8-9 km in city and 9-11 on motorway. Bear in mind its a 2.4 engine. One more thing here worth mentioning is the pick up of the jeep has also tremendously improved.