Here's a screenshot of the Winnebago LeSharo's engine: And here's the Jeep's: Clearly, they're related. Who knows, maybe the RV towing this XJ around the country had a Douvrin diesel in it.

Do you want v-8 performance from your XJ without the cost and complexity of a V-8 swap? Are you tired of driving ... we can embarrass the black-cloud diesel pickups from 0 to 60 and still have ...