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Old 09-14-2008, 01:34 PM
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question about steering knuckle when replacing brake pads

I am in the middle of replacing my front brake pads. I noticed that the two knuckle surfaces upon which the outside pad hardware rides was corroded and pitted (See pic). I took a file to it to clean it up.

My question: What kind of lubricant, if any, could or should I put on there to keep the surface smooth and to protect it from corroding? Or is that a forbidden area for lube considering how close it is to the braking surface?

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Old 09-14-2008, 02:03 PM
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I just noticed my pads came with brake lubricant for these contact surfaces. I did some more research anyways and it looks like I'll be able to answer my own question. I'll post a good site I found for the record.

http://www.aa1car.com/library/2005/ic80560.htm

The important thing this site points out about what I was wondering is that petroleum based products can't handle the heat that brakes put out. It could liquify and contaminate braking surfaces.

Silicone-based brake lube is the way to go.
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