Originally Posted by Skyline

I stand corrected on the BMW dealer installing a used engine. Would never happen around here. In my state dealers are required to stand behind all repairs for a certain time. I would think this would preclude them from installing a used engine unless there's some sort of loophole in that law for used parts. Or maybe that law is not in place in the OP's state.

I guess the whole key is what the CEL was on for. Even if the light was cleared, unless the service records show the code, they could always say whatever they want...ie. Loose Gas cap or whatever.