Plug 6 vs plug 2 in a 1999 4.0 with 3000 miles on it. 200 miles on plugs, new high volume fuel pump, new rail, new injectors, new 62mm throttle body. Fuel pressure is 55psi. Prior to new fuel dilevery up grades plug 6 looked like a stalagmite (last pic) Oil looks 110% perfect and no milky...