Problem with / replacing a fan on a galaxy gt430 card?

Recently the fan on my galaxy gt430 card has started to hum.

My first thought was to try and oil it but from everything I've tried to look up and what I've seen of the fan there doesn't seem to be any means of oiling it.

I'm trying to find out if it is still under warranty but also trying to find a replacement fan on my own as the cost of shipping and packaging for a rma would cost me more time and money than simply swapping the fan out.

Would anyone be able to help me figure out if it is possible to oil the particular model of fan on this card or point me to where i could find a replacement fan?

I've been looking around various random sites but the closest fan I could find that at least looked identical at first was a 4 pin fan and the one on the card is a 2 pin so I don't know if that makes a difference.

While trying to find a means of oiling the fan i took off the sticker that I believe had the identification numbers on it and misplaced it so I'm not even sure what kind of fan I am looking for.

EDIT: While browsing around I found a series of Evercool replacement fans of various sizes on newegg. There seems to be a number of complaints about the screw holes being the wrong size and not correctly aligned so I'm cautious but haven't seen any alternatives that would seem to match my card.