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Brake Fluid Identification

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Old Apr 3, 2009 | 02:35 PM
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Default Brake Fluid Identification

Hello,

I bought a fully customized 2002 Dyna Low Rider at a Sheriff's drug dealer sale. The bike was completely redone: S&S engine, PM wheels - forward controls and hand controls - rotors - brakes - hydraulic clutch, fat tire kit, dakota digitals, new tank, custom seat, Pro-One front end, custom paint.....

My question is this; I can't tell what type of brake fluid was used in the new PM hydraulic clutch or the new PM brake system: DOT 4 or 5. Is there a test or visual way to assess this? It looks like most fluids to me. I'd like to think they used a silicone DOT 5 with this high-end stuff but who knows.

Any help or suggestions would be appreciated. Thanks in advance.
 
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Old Apr 3, 2009 | 03:11 PM
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Paint a small test piece and tape it down the middle. Brush one side with dot4 and the other half with dot5 . Dot3 and 4 will remove the paint and dot 5 won't. Let the paint cure for a couple of days, or find something already painted and test on that. I can't help you with smell differences and colour is not indication. I'm not into taste testing either.
Ron
 
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Old Apr 3, 2009 | 07:49 PM
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DOT 4 will have a golden/clear/yellow color to it and some DOT 5 will have a blue/purple tint to it.
 
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