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  1. Brakes: Dot 4 to Dot 5 Conversion

    Maintenance, Tech and Products.
    Dot 4 is an alcohol based Fluid and as such absorbs water (rusts cylinders) and breaks down rubber seals. Dot 5 is Silicone based, does not absorb water and preserved seals. I put Dot 5 Brake fluid in two of my previous bikes. Once this was done, I never had to do any brake maintenance after...