Hi.  I own a 2000 9-5 2.3t.  I recently had the 48,000 mile service, in the
course of which the mechanic put some flushing agent through the engine
because the 'emissions were too high'.  3,500 miles later the exhaust is
still billowing blue-grey smoke on start-up, and occasionally at
gear-changes on the road.  The [supposedly SAAB specialist] mechanic, who
had been around for some time, has been kicked out of his workshop by the
landlord so I can't go after him.  My guess is he bungled the flushing, and
there's still a residue in the system.  Is this likely?  Can I don anything
about it?  Could it be far worse?  Should I be worried?  Should I be worried
enough to take it to a dealer?

David