Replacing/fixing an noisy cpu fan

My config: amd X2 4000+ , asus AM2 m-atx mobo.

I read this guide about oiling cpu fans. so i proceeded to remove the fan and then applied oil as instructed. Since i have done this, the fan has become exceedingly noisy.
It always used to make a lil annoying buzz before . But now its exceedingly loud. Is there a way to fix this ? like somehow open the fan or change bearings or something... ?

If I have to purchase something then , I want to go as quiet as possible .

These i think are my options:
1. get cheapo fan replacement (would probably be noisy)
2. get some nice pricey quiet fan , and use it with stock heatsink.
3. replace heatsink and fan by aftermarket cooler for pin-drop silence.

I don't have an exact budget, but as always lesser the better.

ASUS m-atx mobo , m-atx cabinet (i think) AMD X2 4000+ AM2 socket.

suggest something please. I am willing to mod/tinker with things...

Thanks

Have you tried ASUS? NewEgg, Directron, Frys?
It doesn't need to be pricey.
Replace the heat sink and fan as one package for best results.
Now you know why we warn against oiling ANY fan bearings.

It would be helpful to know the exact computer model you have.

Am from India, so those options are out...
Here's the damn article btw