A few things here. Change the oil every 3,000-3500 miles with Mobil 1 Synthetic. Also, use the correct Mopar Coolant for this engine. If the water pump fails, have an Mopar branded pump rather it's a Dodge, Ram, or Jeep brand. The other thing is expect to replace the timing chain guides near or at 150k miles. If the radiator or related component fails never let the temperature get over half. Regarding the lash adjusters, I think you can buy the same ones that fit a Ford 4.6 3v V8. The later 2008+ 4.7Ls had better cams, heads, and intake manifold. I don't see those with the valve guide seat issues but, still the same rules apply as the older 4.7L here.
