I noticed a stain on my drive way upon returning from work today. It is orange, but oily. Looks like a combination of clean engine oil and coolant. I cheked the dip stick, oil is dirty (about 2500 miles since last changed), but the oil on the ground looks orange - but this out soot. Under the truck I see the stain on the block, looks like its running down from under the passenage front side of the exhaust manifold or front freeze plug. It is dripping from looks like the trans cooler lines, but the block is wet above the lines. Have I blown a head gastket ? How do you check for this? I don't see any coolant in the oil or oil in the coolant....Truck is an 01 with 77K, running a boost valve and PPE Accelerator level one.

It's coolant

Check the turbo coolant lines for cracks.

you were 100% correct! Thank you. Turbo cooler line behine the fan is shot.
Leaking all down the front of the engine and down the right side