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I'm one of those people, one because I love my Jeep, and 2 because I'm still trying to undo the damage the old owners did to it. You don't EVER let the engine drive after 7500 miles without an oil change and no oil on the dipstick!!! They were such dumb retards. I also changed my fuel filter not too long ago and the fuel that came out was black. Spark plugs were recently changed cause the old ones had their electrodes worn so bad they were gapped over 2 times the factory gap, almost 3 times. I still need to replace some more needed maintenance, as well as an oil change needed in the next 300 or so miles. It may look like a sound vehicle, but when you buy a used J.E.E.P., Just Expect Every Problem