here is what i did to fix the problem on my fan. (thanks for all the help)
first i did some reviews of my temperatures, to see if the fan isn't working how it should. So i some stress test and constantly checking temperatures.
I see that my temperatures where fine, not going over 80°C with heaven benchmark and playing games like far cry 3, it didnt past the 85°C.
and then checking how much time it takes to the temperature to go down. it take a few seconds to drop from 85°C to 70°C.
so there is when i notice that my fan was working fine. i was just a annoying noise. (thanks again for those who reply to me!)
after that i disassemble my pc (i leave the mother board on, i did not take that out) after disconeccting the fan i took it out and clean it, i take away the stiker thinking i will be able to put the oil there but not.
to oil this fun you must take it all apart.
so that how the fun looks when its all apart. you have to oil the center of the second photo. assemble it all over again. be careful with the screws dont leave anyone loose!
now my noise is gone and runs more smoothly than ever! i did to the other fun while i was in there! is more easier on the cpu fan than the gpu!
hope this help someone!