Turn up the Stereo.. hehe

Then you wont hear it at all.

But seriously, Any kind of lube will attract more dirt to it.

You should probabaly just deal with it until you can get it changed out.

I'm not a tech though, so I'm just expressing my opinion for ya.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U