Congratulations. These are solid trucks, but catch up on all the "stickies." My 2011 Pro-4X now has 41K on it and I've had to replace the exhaust (rusted out near axle back flange, new struts and shocks (passenger front was leaking) and I've replaced the transfer case seal (once by dealer and once by me last night fixing the sketchy Nissan service departments botched repair). I also need to replace the rear pinion seal soon and you should check your rear axle vent. Plenty of threads on all this, but just giving you a heads up. This sounds like bashing, but every vehicle has its problems and the first generation Titan is a decent truck. Last, keep an eye on the exhaust manifolds for cracks/leaks. Welcome aboard!