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Old 04-06-2001, 09:38 AM
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goldenbear goldenbear is offline
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Join Date: Mar 2001
Location: NorCal
Posts: 442

Though it may not be comforting to run the engine consistently where the coolant temps exceed 100 degrees C, it is not a problem for a properly tuned vehicle. The red zone is at 120C for a reason.

That said, given the history of head problems with the OM603.97 engine, I would be just as interested as you in keeping coolant temps under control. The fact that the problem worsened following a supposed fix by the dealer necessitates a return trip.

'04 ML500 - 53k, Inspiration Edition, Desert Silver
'11 Audi A4 Avant - Brilliant Black
'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold
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