Hello friends, I am getting a green antifreeze leak and not 100% sure if it is coming from the o-ring under the transmission oil cooler. When inspecting from underneath the car, I can see that the ring is wet and traces of antifreeze leads up to the ring. However I don't know if that ring seals in antifreeze or transmission fluid. Maybe the antifreeze is leak from somewhere that I can't see and just got wicked into the crevice. Please check out the attached pic and let me know what you think. Thanks.

 

the O ring is for the transmission fluid.

sometimes the leak happens are the inlets of that cooler. also, it might be the thermostat housing which a more known problem area than the cooler.

wipe it clean/dry and monitor after every drive. make sure you top your coolant.