Removing the oil filter is a bear! Once you push your arm between the tie-rod and the fan shroud and reach the filter, there's no room to get a good grip on the filter to screw it off.
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When my new Liberty reached 2,500 miles, I couldn't get the factory-installed oil filter off so I ended up taking the Liberty to a quick-lube-place to have the oil changed and the oil filter replaced. (Apparently, the factory put the filter without oiling the rubber gasket and must've used an impact wrench).
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Then, at 5,000 miles, I changed the oil and replaced the oil filter with almost no effort. I oiled the rubber basket on the oil filter then snugged up the filter by hand and turned it another 1/4 turn.
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Now, at 8,000 miles, I first tried a oil-filter end cup (or cap). For picture:
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The cup fits snugly over the fluted end of the oil filter. One end of a 3/8" extension bar goes in the square hole on the back of the cup and the other end of the bar goes in a socket wrench.
When I turned the cup, it rounded-off the flutes and just spun.
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I then tried a nylon strap-type oil-filter "wrench". For picture:
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The nylon strap goes around the oil filter and one end of a 3/8" extension bar goes in the end of the handle and the other end attaches to a socket wrench
As the extension bar turned, it tightened the strap around the oil filter. When it didn't unscrew the oil filter, I stopped, fearing it would rip apart the filter and I'd have an even more-difficult time getting the torn filter off the mount.
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Is there anyone out there that has actually changed the oil-filter on a Liberty? What tool did you use