Is lubricating a fan a good idea?

[Apokalipse]

Once, the rear fan of my PSU seized up.
I sprayed some lubricant into it, then gave it a push to start again, and it's been working fine since.

 

[zedman3d]

For goodness sake CWIZ, that sort of comment is OK when talking about some sort of old-fashioned fans with ball-bearings. When they made a noise the balls had actually become square!

Maybe you shouldnt yell at established members of our forums...

 

[Harper]

2. Should fans ever be replaced? I been using a fan for over 3 years or so (this is the one I would like to lubricate) and it seems to still be working.

Fan should be replaced from time to time. Normally I do this when they are getting too noisy.

I work setting up CCTV systems and DVR-CCTV boxes all the time. I have tried putting some oil on fans when they become too noisy. However I find myself doing this every six month or so. Where as just replacing the fan should give me 2 years with out any hassels.