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Hi, urgently need your help, I recently bought a Jeep Grand Cherokee 3.0 diesel. The car was brought from America, mileage was about 141 miles, and I change miles per km. The first time the computer started to warn about replacing the engine oil at 2,000 km, the second time at 3000 km, and now I have traveled 500 km, and the computer again shows that already has 80 percent to oil change, and it will do again about 3,000 km. But it's not normal to change the oil every 3000 km, please help, what should I do?

And one problem when I first got into the car, it was all in miles, I changed the mile per km, and since then, and led, recently decided to again change per mile, but it was not there, replaced only a speedometer and the total mileage cars remained in the mileage as you think what is the reason and what can I do?

P.S. drove the car in service, diagnostics revealed no problems.
 

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I had my first oil change at 6800 miles and 2% oil life remaining. I knew there was an software upgrade to address this and made sure it was loaded when the car was serviced. There were actualy four upgrades. I do not know what the others addressed. But I have been watching and so far I am getting about 100 miles to 1% of oil life. But it's warm out and the most use previously was cold weather with excessive idling.
 
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