So it seems that both the M103 and M104 should stabilize at around 90C. Is that the case for both the E (e.g. W124) and the S (e.g. W126) bodies? Asking because the additional space under the S's hood may result in a lower operating temperature? And if not, what are the consequences / drawbacks of an engine operating at a lower temperature than designed? But 10C lower may not be a big deal...

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1991 W126 300SE (M103)
1995 W124 E320 Wagon (M104)