If it is reddish/pink there is a chance that ATF got into the coolant as well, but the oil will separate. If there was a leaky radiator and stop leak was used, there is a chance ATF got in there as well since (at least on the w126? correct me if wrong please) the radiator doubles as teh trans cooler.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth