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FJR Motorcycle Forums
FJR Specific Discussion
Specific brake fluid
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<blockquote data-quote="Coachpilot" data-source="post: 1462111" data-attributes="member: 98593"><p>AND it's about more than just boiling point. Different brake fluids also attract water more than others, despite the higher boiling point. (Remember from science class what happens to water when it's over 212F, it turns to gas as in air bubbles, yet back to water when cooled off. That means your lever is soft when riding yet when you go to bleed them as they have cooled off, you never get any air bubbles!!). I use Prestone DOT-4 in the FJR. I use the higher boiling point Motul Racing 660C in my R-1 track bike yet have to change it 2-3 times per summer...and the reservoir diaphram always has lots of water on it.</p></blockquote><p></p>
[QUOTE="Coachpilot, post: 1462111, member: 98593"] AND it's about more than just boiling point. Different brake fluids also attract water more than others, despite the higher boiling point. (Remember from science class what happens to water when it's over 212F, it turns to gas as in air bubbles, yet back to water when cooled off. That means your lever is soft when riding yet when you go to bleed them as they have cooled off, you never get any air bubbles!!). I use Prestone DOT-4 in the FJR. I use the higher boiling point Motul Racing 660C in my R-1 track bike yet have to change it 2-3 times per summer...and the reservoir diaphram always has lots of water on it. [/QUOTE]
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FJR Motorcycle Forums
FJR Specific Discussion
Specific brake fluid
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