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So, I've been working on my Q7 for the better part of the last week in order to fix the coolant leak (and oil leak, apparently) that it is suffering. It is a real PITA job, and I thought I would share just a bit so y'all could enjoy.....

All of these images are directly overhead on the engine, showing multiple layers as I dig my way down to the meat of the problem.

Removed some wiring/hoses, but this is basically the top layer showing the intake manifold (black part) in place:



Intake manifold removed; the "top layer" now is the EGR cooler:


After removal of the EGR cooler, you can see a "lake" of fluids surrounding the the oil cooler, which is the rectangular box directly below where the EGR cooler (and intake manifold before it) was located:


I spent a significant amount of time soaking fluids out of the valley here in order to bring the level of the fluids down below the bottom of the oil cooler. Once I finally did that and could see the bolts holding it in place, I removed it to leave only ONE LAYER left, which, I believe, is the Oil Cooler Adapter Plate. Nope, it's not complicated or anything....




If you notice in the lower left, you can clearly see where the coolant channel is for the oil cooler. I believe that it was either here, or at the gasket under the adapter plate, where the coolant leak originated. I still need to soak up 2"-3" of fluids in order to have the little pond there emptied out.

The truly crazy thing is that, technically, all of that wet, blackened area along the cylinder heads (left and right sides of the photos) and under the high-pressure fuel pump (top center of the photos) is *external* to the engine.... it should all be clean and dry. Yeah, not so much!