The water pump is inside the front cover, lets hope we dont have a water pump failure, that would destroy the engine if not caught quickly. The problem is, that we will not see the antizreeze leak on the ground for us to see, it would leak into the oil pan. Imo dumb design, we all know how long water pumps last! To change a water pump on this would be a nightmare. The timing chains have to come off, you need special tools to hold the cam shafts. Ugh what a mess and time consuming. Water pump on my mountaineer took 45 mins.
Any ways, I am guessing some fluid dripped down the block and into the oil pan.
Hopefully that the case.
View attachment 36173