Got a letter today from infiniti saying that they will give me a discount on the 90,000 mile service, exactly what is performed at this service?

 

absolutely nothing..its a rip up to get a tuneup at dealership

what you should have done is
-radiator flush
-tranny flush
-change oil
-brake system flush
-power steering flush
basically flush all your lubricants and put in new fresh ones

change plugs
change fuil filter
change belts

have a mechanic shop do it for you..
get all the parts and its gonna be cheaper