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Author Topic: Front brake caliper slider pins lube question  (Read 599 times)

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Andy A

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Front brake caliper slider pins lube question
« on: 14 August 2018, 08:42:31 »

It it OK to use this silicone grease on the front brake caliper slider pins to lube them up? I already have this handy.




Or is there a recommended grease to use?
« Last Edit: 14 August 2018, 08:53:05 by Andy A »
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #1 on: 14 August 2018, 09:03:54 »

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Carfix

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Re: Front brake caliper slider pins lube question
« Reply #2 on: 14 August 2018, 10:21:38 »

I have started using red rubber grease on the caliper sliders on my cars after years of using copper grease.

It doesn't effect the rubber covers, has not deterioated like copper grease over time and has remained stable with high temeratures.

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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #3 on: 14 August 2018, 10:24:23 »

It looks fine with rubber but there is no mention of temperature.


EDIT
https://www.ebay.co.uk/itm/Granville-Red-Rubber-Grease-Hydraulic-Lubricant-Brake-Caliper-Piston-500g-Tin/302636723893?epid=8015691171&hash=item46768deeb5:g:P8UAAOSwEYBagfKS

Like this. Don't use copper grease.

I think but I'm not sure -40degC to +200degC found in this link. https://www.lubesetc.com/silicone-grease-lubricants-22-c.asp. Will send them an email.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #4 on: 14 August 2018, 10:25:30 »

It'll probably be fine. The Omega is hardly a point and squirt car.
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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #5 on: 14 August 2018, 12:06:58 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #6 on: 14 August 2018, 12:21:38 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
Glad to help, if indeed I did!
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Andy A

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Re: Front brake caliper slider pins lube question
« Reply #7 on: 14 August 2018, 12:39:47 »

It'll probably be fine. The Omega is hardly a point and squirt car.

I'll give it ago and if I get any problems will report back.  :y

Thanks all for your advice.  :y :y
Glad to help, if indeed I did!

Any help or advice is always grateful.  :y
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GastronomicKleptomaniac

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Re: Front brake caliper slider pins lube question
« Reply #8 on: 14 August 2018, 13:06:25 »

IME, anything slippy will do. Copperslip. Grease. Margarine.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #9 on: 14 August 2018, 15:07:05 »

IME, anything slippy will do. Copperslip. Grease. Margarine.

Please don't use just anything slippy. Copperslip soaks into the rubbers over time and causes the rubbers to swell. This can lead to ineffective brakes. I'm not sure on the other suggested lubes, but personally I'd use the proper stuff. Granted, the sliders are less of an issue than the piston seal and dust capm but still.
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Doctor Gollum

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Re: Front brake caliper slider pins lube question
« Reply #10 on: 14 August 2018, 15:22:46 »

It'll probably be fine. The Omega is hardly a point and squirt car.
Clearly never driven yours hard...

200 isn't enough. Use this at your peril.
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deviator

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Re: Front brake caliper slider pins lube question
« Reply #11 on: 14 August 2018, 15:40:19 »

It'll probably be fine. The Omega is hardly a point and squirt car.
Clearly never driven yours hard...

200 isn't enough. Use this at your peril.

The reason I said 'probably' OK, is because whilst brakes get hot, the caliper brackets shouldn't be as hot as the friction surfaces. As most people measure the heat on the friction surfaces, I would have though 200 degrees is enough. But I'd use red brake grease in the first place.

EDIT

Urm, red brake grease specs....
1 x Granville Red Rubber Grease 500g Tin
...........
Specification Information
Operating Temperature: -20C to +120C

Which is a little worrying.
« Last Edit: 14 August 2018, 15:43:11 by deviator »
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Kevin Wood

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Re: Front brake caliper slider pins lube question
« Reply #12 on: 14 August 2018, 16:09:57 »

The boiling point of DOT4 brake fluid is only 230 C, so if the caliper support has got up to 200 C I think the grease would be the last of your worries, TBH.
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Doctor Gollum

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Re: Front brake caliper slider pins lube question
« Reply #13 on: 14 August 2018, 16:19:22 »

Food for thought*...

https://youtu.be/VEL9diENZY0

What happens to the front brakes on a heavy car used on an nsl dual carriageway with lots of roundabouts will get alot hotter for longer. If parked immediately after, then heat soak could become a concern.

*This test, whilst interesting, is on a light weight car which is stationary.
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