2000 A6 Quattro 2.8l

The car has 165k miles and the timing belt, water pump and tensioner were done 70k miles ago. I change the oil about 600 miles ago and about 100 miles ago I developed a oil/coolant leak from the front of engine in center.

I came home from work (30 miles) and parked the car, did a few things around the house and about 1 1/2 hrs later found a huge puddle of what I believe was oil/coolant on the ground. I checked both and found out thats what it was. I top off the oil and coolant and then put the car on stands. I ran the car for fifteen minutes at idle while looking underneath and found nothing and then at 2k rpm for ten minutes and still found nothing. I take it to work the next day and check under it when I get there and nothing. I drive home and put it in the garage and about 10 mins later I see oil/coolant puddle in the center of the car. The puddle is not as big as the first one but its a puddle.

It seems to be coming down the front of the engine and riding the oil pan towards the back and drops to the ground from there but it is also very wet at the top of the lower radiator hose above the aux pump.

I also haven't noticed heard the aux pump kick on lately, was trying to get it too but the engine temperature never got hot(always runs very cool). So with the pump not running I can eliminate it as the leak source.?

The car runs fine with no loss of power. There's no coolant on the dipstick but have to check the reservoir for oil residue( theres a crusted white residue right below the reservoir which shown up the same time as the problem).

There's alot here but not really sure what I'm looking for so any help would be greatly appreciated.