Oh No, Larry, not the 300E. Well, my friend, I have been down this road, and here is what I recall from this experience, including perks from Donnie and Steve. It sounds like the head gasket has gone. My understanding is the M103 is prone to this when it gets real hot. Not prone to head cracking (I've been told the head is a relatively soft alloy), but is prone to quick warpage. Can you describe the "terrible noise" and did it start anyway? Anyway, I will pray to the Gods of MBZ in your behalf. What a bummer

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Jeff Lawrence
1987 300e
1989 300e
2000 Dodge Grand Caravan SE

[This message has been edited by jeffsr (edited 07-30-2000).]