Home Forums Gear Hunting Trucks and Four-Wheel Drives Jeep 4.0l question

Are they known for longevity of properly taken care of? Wife is looking at a couple 4door wranglers. Between 190,000 to 210,000 miles. I told her to keep looking.

My only direct experience was a buddy’s that jumped time and swallowed it’s ass at about 225k. That’s a pretty good service life IMO but I wouldn’t want to be starting there.

I've owned 2 Jeeps with the 4.0L straight 6. A great engine that could run 500k miles with regular oil changes. The do tend to seep oil around the valve cover gaskets. I ran both Jeep up to 200K miles and when I sold them they were running strong. l always use full synthetic oil.

At those miles I'd be more concerned about the running gear being worn and in need of having a small pile of money put into it in short order for brakes, suspension, tires, etc. I always figure that I'm going to need to spend $1K on a used vehicle with between 75K and 125K miles and $1,500 if it has more than 125K miles.

Pretty sure the 4.0 never serviced the 4 door Wrangler unlimited, only the 2-door LJ variant.

Yes 2006 TJ and LJ Wranglers were the last with the bulletproof 4.0L straight six. "New" 2007 and up Wranglers, 2 and 4 doors, had V-6's

I don't know crap about Jeep's, only owned one in the last 30 years. I'm going by the ads, haven't seen them in person. If the 4.0 wasn't in the 4 doors then it makes me question the rest of it.

'sides, it would be replacing a f150 with 270,000 and I sure as hell don't want to start over with something at 200,000.

Appreciate the info

My sons 98 4 door had a 4.0 in it.

Joel, Our rural mail lady had one from that era, she almost lost her mail contract from frequent breakdowns. Bit the bullet and got a Toyota Highlander, 2015, still going at 260,000.

Actually talked her out of the jeep. Picked her up a 05 f150 with 80,000. Runs and drives great for 16 year old truck. Today just ordered 33x12.50 tires with 20"ers. Plus a leveling kit.

This will get her in the dunes like she wants.

If it did it didn’t come from the factory that way

Of the 4 door JKU's you will want to get a 2010 and newer, it has the better V6.

My 2012 has 140k with no issues.

How do you guys get pics to fit but still look good.

Her dune truck. Gonna get a tuner, cold air, and a few other things.