My wife has a 2008 dodge with the lifetime warranty. It only covers defects not worn out items. So if the tranny goes out or the engine needs replaced at 200k they are not necessarily going to replace it. They will only replace items that you can prove should have lasted longer. At least that's my understanding...
2008 supercharged sahara JKU, gibson exhaust, 3" lift, 5.13 gear ratio, 33" toyo AT, 17" MKWs, electronic sway bar disconnect, AEV bumper with warn 9.5ti and skid plate, AEV heat reduction hood, garvin expedition rack, piaa roof/pillar/winch lights, cobra cb, tow package... and a few other mods