I don't think so. ATF can get into the coolant if the ATF-coolant heat exchanger in the radiator has a leak. Also, the coolant can get into the oil if you have a bad head gasket. But the only way for ATF to get in would be for it to first leak into the coolant and then leak from the coolant into the oil, and the likely hood of that happening is very small and the amount would probably be unnoticeable.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record