3÷5 brake fluid

Bergini · Oct 3, 2011

I have been following the "locking front brake" thread where there is a ton of great brake fluid info and since i am thinking about it, i had wanted to change my front brake fluid but on the master cylinder cap it reads 3÷5 brake fluid is recomended? it plain as day says "3÷5", i have never heard of anything like this, i was just going to use dot 4 since i have left over from my rear brake but thought i would ask for ideas before i melt the seals out of my master due to using something incompatible with my system, anybody have any experince with dot 3÷5 fluid or using a substitute and having good long term results?

helithumper · Oct 4, 2011

Use DOT 4. my cap says the same thing but on my swing arm in the rear it says ( use dot 4). in the husaberg manual they tell you to use DOT 5.1 and never use dot 5.

I don't see any benifits in using Dot 5.1, I find it just costs more. I replace my fluids 2 a year with DOT 4 and have had no problems on any of my bikes in the past.

squi15 · Oct 4, 2011

The best thing to do would be to check with the manufacturer of the brake system. Some brake systems cannot use dot 3 or 5 because they contain silicone and will break down the seals in the brake system. (dot 5 is purple in color. Not sure if dot 3 is as well.) Also, if you plan on changing fluids (dot 4 to 5.1 for example) be sure to completely flush the system as some brake fluids cannot be mixed.

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3÷5 brake fluid

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