Pings on big hills at highway speeds (Grapevine I5, California).
Front doors not aligned, lots of wind noise. Shims will likely fix.
Drinks lots of gas.
Nothing major.
Pinging stumps the mechanic.
Great 4x4.
White paint shiny and lusterous. Wood panelling not fading or peeling. Tan leather like new, same with the carpet.
Many people express admiration. Do not see myself parting with it.
My Wagoneer pings on grapevine too. Check all vacuum fittings, hoses, switches. The air leaks fried my valves, now the engine has been rebuilt (I intend to keep it). I have replaced all the vacuum stuff and I'll leave a comment if it solves the problem.