Jeep, as the brand we know today, was first established by Willys Overland after he produced the company’s Quad vehicle for the U.S. Army during World War II. In the years since, Jeep has passed into the hands of American Motors and Chrysler, with its 4.0L engine design amongst the most sought-after and reliably bought models. One of the many attributes that made the 4.0L great was its relentless durability. Regarded as one of the most reliable engines ever built, it
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