This is the oil I used to my G35 it did went 1/4 inch over max and now steering wheel is heavier than before? what is the problem? it is red color, is red color fluid suitable for G35?

 

That fluid is fine. Did you top off a little, was there a lot missing, or were you refilling the system? What I'm getting at is you may need to bleed the system. Topping off a little wouldn't require that though.

 

You are right, i did it with small pump, the old oil was rather dirty. I thought the OEM used to be gold color, now it is red. I refilled the system. I did bleeded, possibly i need to do it once more time. car is 18 years old, and still original power steering .