A guy bought a cheap Jeep YJ and drove it from Alaska to Argentina in 2012, and then began a tour of Africa in a different one. He put together a quick article about preparing a vehicle for extended overlanding in remote areas, where rolling up to a service station isn’t an option. His TL;DR list: Keep it as stock as possible, replace high-wear parts before leaving, know your vehicle and prep with any specialty tools you’ll need, and obviously, don’t drive it like a meathead.