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03-03-08, 10:36 AM | #1 |
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What Brake Fluid...
I know I need DOT 4 but do I get Silicon or Synthetic??
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03-03-08, 10:39 AM | #2 |
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Re: What Brake Fluid...
Just normal DOT4 from your local Halfrauds or motor parts shop - whatever's cheapest will do as long as it's a known brand like Castrol, Comma etc. Unless you're racing I wouldn't bother getting anything flash.
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03-03-08, 10:43 AM | #3 |
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Location: Alloa,Clackmannanshire,The Wee County
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Re: What Brake Fluid...
+ 1 As lozzo says, any Dot 4 brake fluid.
pete
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SV650 Sport in Black MZ saxon tour 301 Previous bikes SV650 Naked BMW 650cs Scarfer MZ RT 125 4 stroke |
03-03-08, 10:44 AM | #4 |
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Re: What Brake Fluid...
not racing and looking for the cheapest named brand but do I want Silicon or Synthetic?
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03-03-08, 11:01 AM | #5 |
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Re: What Brake Fluid...
They're all the same in reality, makes no difference.
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03-03-08, 11:02 AM | #6 |
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Re: What Brake Fluid...
Have a look here.
http://www.demon-tweeks.co.uk/produc...07&tlgrp=MCR07 It is all personal preferences. hope this helps. pete
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SV650 Sport in Black MZ saxon tour 301 Previous bikes SV650 Naked BMW 650cs Scarfer MZ RT 125 4 stroke |
03-03-08, 11:07 AM | #7 | |
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Re: What Brake Fluid...
Quote:
Funny that I was just on that page when I came across the Silicon or Synthetic stuff, which is why I asked. |
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03-03-08, 11:08 AM | #8 |
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Re: What Brake Fluid...
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03-03-08, 11:08 AM | #9 | |
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Re: What Brake Fluid...
Quote:
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03-03-08, 11:09 AM | #10 |
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Location: Alloa,Clackmannanshire,The Wee County
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Re: What Brake Fluid...
Also have found this article....
5. "Should I use DOT 3, 4 or 5 brake fluid when replacing?" (Thanks to Michael Ragsdale, from the race list, for some of this info.) DOT 3 and DOT 4 are functionally very similar. 4 has a higher boiling point, but motorcycle brake systems don't generate the kind of pressure and temperatures that need it on the street, in general, although it certainly won't hurt your system to put it in. DOT 5 is very different--it's silicone based, doesn't absorb water, isn't corrosive, is bad for some seals, is hard to bleed, and is not miscible with 3 or 4. Stay away from it--it needs a system designed for it. And it comes as stock item in Harley's, so it must be terrible. :-> DOT 5.1 is compatible with DOT 3 & DOT 4 (If I ever get hold of the bonehead who named DOT 5.1...) Here's more detail than you really want: DOT3 is an aliphatic polyether. DOT4 is borate ester based. DOT5 is polydimethylsiloxane (silicone based). DOT5.1 is borate ester based, thus its compatibility with DOT3 and DOT4. More information can be obtained from the following standards documents: DOT3: SAE J1703 DOT4: FMVSS 116; proposed SAE standard J1704 DOT5: SAE J1705 DOT5.1: No SAE spec If you are interested in obtaining copies of these standards documents, you may order them directly from SAE at http://www.sae.org/PRODSERV/STANDARD/gv/179.htm According to DOT Federal Motor Vehicle Safety Standards specification 49CFR571.116 (which refers to SAE documents J1703, J1704, J1705), the minimum equilibrium reflux boiling point requirement in deg C for each is: DOT 3 205 DOT 4 230 DOT 5 260 DOT 5.1 260 This shows that, all else remaining the same, DOT 5.1 has a significant advantage in heat capacity over DOT 4. Note that these specifications are for completely dry (no H2O content) brake fluid. Of course, all else does not remain the same and other than boiling points and H2O content (which is very detailed in itself), most other properties were beyond the scope of testing/interest of my friend. Any other information should be gained from SAE, DOT or other authority. pete
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SV650 Sport in Black MZ saxon tour 301 Previous bikes SV650 Naked BMW 650cs Scarfer MZ RT 125 4 stroke |
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