Using car brake cleaner on bike hydraulic brake calipers and discs?

Fordulike

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Feb 26, 2010
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Is it ok to use car brake cleaner, to clean up bike hydraulic brake calipers and discs?
 

RobF

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Sep 22, 2012
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No reason not to.

I use a Muc-Off one which is sold for motorbikes and bikes.

Alternatively, anything that lightly abrades the rotor will do, emery cloth or the yellow liquid kitchen cleaner.

An old MTB trick is to smear some mud on the rotor and let riding do the job for you.

You could also separately abrade the pads.

A tip for this is to remove the wheel and use a nail file - saves removing the pads from the calliper.
 
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Cyclezee

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Personally I remove the pads, it's easier than taking a wheel off. Clean rotors and pads with a clean cloth dipped in isopropyl alcohol, wait until it has evaporated lightly abrade the pads and refit. It only takes 5 minutes.
 
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Fordulike

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Feb 26, 2010
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I use a Muc-Off one which is sold for motorbikes and bikes.
I followed your lead on the Muc-Off stuff, and noticed that it boasts about being able to re-hydrate the disc pads:

Muc-Off brake cleaner

Is dehydration of the pads an issue? and if it is, I guess car brake cleaner will probably dehydrate them pretty badly, as it's usually just pure isopropyl alcohol.
 

RobF

Esteemed Pedelecer
Sep 22, 2012
4,732
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I followed your lead on the Muc-Off stuff, and noticed that it boasts about being able to re-hydrate the disc pads:

Muc-Off brake cleaner

Is dehydration of the pads an issue? and if it is, I guess car brake cleaner will probably dehydrate them pretty badly, as it's usually just pure isopropyl alcohol.
Not sure, everyone says use isopropyl alcohol in whatever form you can get it.

Maybe this is a case in which the dedicated packaged product is superior.

My £5 tin will last me a lifetime.

You are welcome to a few squirts if you want to bring the bike round.