[Vwdiesel] Oil in the coolant

[LBaird119 at aol.com]

  Odds are it's a blown/leaking head gasket.  Could be a warped head as 
well.  Cracked block is rare except for when cracking it on reassembly by 
torquing head bolt down without cleaning out the holes first.
  A compression test will usually show a blown gasket.  If it's not heavily 
blown then difference might not be as obvious.
  You don't often see water in the oil when these blow a head gasket.  You 
can get oil in the water without a cylinder leaking.  The seal around the 
oil passage sometimes shrinks away from the rest of the gasket and 
allows oil to leak into the coolant (not the other way around since the 
oil has the higher pressure and it's a small area) or out the front between 
the head and block.
  An off the car pressure test is the only way I know of to test the head.  
They do crack and leak coolant or oil but not too often.  Odds are it's 
a gasket.  
  Indeed you can overheat one enough to warp a head or blow a gasket 
without boiling it dry.  Perhaps your cooling fan isn't working either?
     Loren