> I've got a leak by the manifold in the cooling system on a '96 Olds
> Cutless Supreme with 3.1L engine.

John,

I repaired one of these for a friend, and found they commonly leak
coolant through the intake manifold gasket, where it winds up in the
oil. The only fix is a new (supposedly redesigned) gasket. The $400
you were quoted sounds about right - it took me about eight hours,
though I'm sure someone who's seen one of these before must be
quicker.

VW content - I remember thinking at the time how nice and simple the
waterboxer is to work on. Its myriad of exiernal coolant pipes is a
genius design, compared with running coolant passages through the
intake manifold!

Angus