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Lube for rubber suspension bushings

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Old 12-01-2006, 06:22 PM
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Bill Ball
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Originally Posted by Flott Leben
Out of curiosity, what does normal grease do to rubber? Eat away at it, weaken it, cause it to lose elasticity?

How about molybdenum grease?
That about covers it.

I don't know about Moly. I suppose some non-petroleum synthetics might be OK too. You may see residue of the original grease around the upper shock bushings, as they are in a protected cavity. It's white. So, it may have been a lithium or PTFE with silicone, as silicone itself is clear. And pure silicone grease may not resist the elements as well as a mixture with something else. I see some Volvo silicone-PTFE grease that looks suitable. Brake caliper grease, as one other post suggested, appears to be silicone-based too, at least in some cases.
Old 12-01-2006, 06:42 PM
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danglerb
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I'm a long time admirer of silicone.

Heat range, durability, outstanding stuff. Often the problem is how to keep it where you want it, out of where you don't, and to ultimately get rid of it.
Old 12-01-2006, 07:12 PM
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Jim bailey - 928 International
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I too have admired some silicon.....
Old 12-01-2006, 07:49 PM
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Doug Hillary
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Hi,
all greases are not the same (like, oils ain't oils) and their formulations vary from an oil (usually SAE140) or clay base through lithium, calcium and etc. Graphite, molybdenum disulphide and other EP components are often used in the mix according to the intended application. In most applications corrosion and oxidation prevention ingredients are a fundamental part of the formulation
Many greases are injurious to rubber or synthetic rubber components

Castrol's GRRB grease is a castor/bentone based product and is probably most suitable for your application

Regards
Old 12-01-2006, 08:02 PM
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Bill Ball
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Hey, Doug. That Castrol GRRB appears to be NZ-specific. I see "Castrol Red Rubber Grease" on UK eBay and it appears to be the same grease. I can't find it in the US. Thank you eBay (and Doug)!

http://cgi.ebay.com/Castrol-Red-Rubb...QQcmdZViewItem
Old 12-01-2006, 08:59 PM
  #21  
Doug Hillary
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Hi Bill,
Castrol Red Rubber Grease it sounds like GRRB in any case - I'm pleased to have helped

Castrol GRRB is available in OZ and NZ

Like oils, there is a bewildering range of greases and using the wrong one can sometimes have very costly consequences

Regards
Old 12-01-2006, 09:19 PM
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Bill Ball
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Originally Posted by Doug Hillary
Hi Bill,
Like oils, there is a bewildering range of greases and using the wrong one can sometimes have very costly consequences

Regards
That exactly why I asked here. Thanks again to everyone for all the responses, including an offline one to use K-Y Jelly.
Old 12-01-2006, 09:28 PM
  #23  
danglerb
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The magic search term appears to be "rubber grease" with many logical looking hits.
Old 12-01-2006, 09:39 PM
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Bill Ball
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Yeah, but it seems the Brits, Aussies and Zealanders are much more concerned about lubricating their rubber than Americans. Most of the links lead there.
Old 12-03-2006, 02:23 AM
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lorenolson888
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Bill,

I have some DC 111 (DC = Dow Corning)...

You can get it at Applied Industrial Technologies.. it is cheap...

http://smp.applied.com/

I used it on my cam cover gaskets... it is a good sealant too... does not cure...

They will ship... THay sell a lot of good stuff...

LO
Old 12-03-2006, 03:06 AM
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marton
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Hi Jim,

HTML Code:
I too have admired some silicon.....



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