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    1. #1
      Join Date
      Oct 2008
      Posts
      296

      Switch from DOT 4 to DOT 5...problems?

      I recently installed Willwood disc brakes on all 4 corners and switched out the master cylinder. Willwood recommends a DOT 5 fluid for daily driving with their systems. Will there be any issue if I fill the new resevoir with DOT5 and then flush out the whole system to get rid of the DOT4? I wasn't sure if there would be a reaction between the 2 since it is not recommended to mix the 2 together.






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