W220 Transmission oil leak

[dhillman]

Hi friends. S430/2001, found some clear oil in the floor, yellowish to pink color. Jack-up the front of the car, removed the 2 engine cover panels. The panel at the automatic transmission had oil fluid. Inspected the transmission body, but it was dry, except for the gasket at the oil pan. Crank the engine on and inspected everything, but no sign of the leak. Put the panels back after inspection of the rack and pinion ( which was also dry). Inspected the P/S oil level, and it was normal.

I sent the car about 3 years ago under warranty to fix an A/T leak, and it has run very well until now. Any suggestion of where this leak might be coming from??? I am almost sure that this is not combustion engine oil. Please advice. Thank you in advance.

Darrel