Upgrade E53 4.4i to E70 i35d

[Unit107]

Sounds like the air springs are still an issue even on the E70. I'm completely surprised My '01 still has its originals after living 7 years in the Chicago summer / winter cycle (think salt and pot-holes) and the last 5 years of the San Antonio heat.

Lubehead, if you don't mind me asking, what did the Injector and EGR Cooler repairs set you back? I'm assuming you are out of warranty with that mileage.

I lost track of repair costs over the middle 4-5 years I owned my E53, but I would have to say it is probably between $10-15K out of pocket over the last 12 years for maintenance and repairs. I have personally replaced 5 or 6 window regulators during that time frame, so I am somewhat aware of the reliability issues on certain systems. However, $200 and a couple hours for a window regulator may be very different than continuously failing diesel components. That's what I am trying to flesh out before making the leap.