Haven't posted on here in quite a while, but my 2003 FX45 mileage went past 200K early in March, 2014.
Maintenance (that I can remember):
Oil changes done many times, not always on schedule. I started adding Seafoam to oil, and periodically to gas tank. I recommend it!!
Brake pad changed numerous times. Front rotors twice, rear rotors once last year.
Fourth set of tires (currently on Yoko Paradas). Nice, and cheaper than the original Goodyear Eagles.
Dealer replaced headlight, taillight units per recall.
I had dealer do transmission fluid replacement once (somewhere under 100K miles)
Dealer replaced gas filler tube per recall.
Dealer replaced front bearing/hubs under 100K (charged me almost $1000 including alignment. Terrible.
I replaced replaced front and rear bearing/hubs at around 175K. Paid approx $650 for all four hubs.
Replaced battery with a DieHard.
Replaced spark plugs once well after 100K.
Replaced belt tensioner, and a couple of serpentine belts.
Repaired fuel injector harness after squirrel chewed through it.
Repaired tubing from windshield washer tank.
Repaired wire harness to fron side marker light (Infiniti uses crappy wiring!)
Replaced camshaft sensor after getting stuck and towed home (after 150K)
Replaced tie rod ends after 170K.
Repaired rusted muffler flange with a couple of bolt-on flanges.
Replaced starter (around 198K).
Replaced front drivers-side ABS sensor (just before 200K)
Replaced front passenger-side CV axle (turned out not to be necessary, kept it anyway, just before 200K).
Replaced forward drive shaft (broke and stranded me, towed home, just before 200K - pain in the ass to replace, but I did it)
Feeling very fortunate that I haven't had very many repairs, and nothing major for the engine. I am anticipating replacement of alternator, possible fuel pump, or some injectors, based on recent changes in fuel feed. Will replace radiator hoses, belts and other things when I get a chance.
Most fun car I've ever had. Someday I will miss it!!