Originally Posted by X53Jay4.8is

Greg keep in mind that the in line 6 cylinder engine that you refer to were aircraft grade motors. Cant kill a M30B35 motor. You really need to cut your ties with two X5 V8s. I would loose the 2004 4.4 and just concentrate on your 4.6is. I bet you the 4.6is that you purchased went long times before oil changes rather than an every 5000K mile change. Care from the beginning makes a huge difference.