Oh no... the one with all the bends? that's your transmission fluid stick... Just kidding!
Welcome to NICO Club!
That dipstick was quite lame, complained about quite a bit and designed by some other dipstick no doubt! Infiniti did change the design in the next model. Anyway... My understanding it that the engine oil pressure is significant in these cars, pushing oil up the stick tube a bit, and so you actually want to wait like 10 minutes after running the engine to let the oil settle down (should resolve your high readings). After settling, pull the stick and wipe it off thoroughly with a towel, put in, draw out and check the measurement. Oil should be between the second bend and third bend. I believe there is a slight mesh pattern stamped onto one side. The first bend is more of a 90 degree twist. The second, third and fourth bends are wavey.
Good luck sir!