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DOT 5 Silicone is what we use in all of ours now Ted.
Quote from: Nurse Julie on August 30, 2020, 09:17:03 PMDOT 5 Silicone is what we use in all of ours now Ted.Wow I didn't think anyone would be using Silicone based brake fluid in a motor cycle presumably that is for using in a system that has no remaining Glycol-based fluid such as Dot 4.0. Are the existing seals suitable or do you have to upgrade for Silicone based fluid? I believe Dot 5.1 is a synthetic Glycol-based fluid with slightly higher boiling point than Dot 5.0 but is still hygroscopic whereas Silicone isn't of course.
Quote from: Macabethiele on August 31, 2020, 12:52:39 PMQuote from: Nurse Julie on August 30, 2020, 09:17:03 PMDOT 5 Silicone is what we use in all of ours now Ted.Wow I didn't think anyone would be using Silicone based brake fluid in a motor cycle presumably that is for using in a system that has no remaining Glycol-based fluid such as Dot 4.0. Are the existing seals suitable or do you have to upgrade for Silicone based fluid? I believe Dot 5.1 is a synthetic Glycol-based fluid with slightly higher boiling point than Dot 5.0 but is still hygroscopic whereas Silicone isn't of course.All our bikes have had the complete braking systems overhauled with new seals etc fitted, so no mix or contamination from the old non compatible brake fluid.
DOT4 works perfectly well. I think I have also used DOT3
https://en.m.wikipedia.org/wiki/Brake_fluidInformation posted above is quite informative, and lucid, in discussing this. I hadn't looked before, but it seems to give decent appraisal of using silicone and why such a system would have any contaminate within it.Also description of difference between 5.1 and 5 regarding silicone content and incompatibility or not.