stakeside Posted July 4, 2018 Share Posted July 4, 2018 I had used DOT 3 brake fluid in my 29 DB truck and my flex hoses in front and back were plugged with rubber material. I believe the brake fluid caused the rubber to expand over a period of non-operation. What fluid should I be using? Need sources to purchase these hoses. Any help will be greatly appreciated. Link to comment Share on other sites More sharing options...
ArticiferTom Posted July 4, 2018 Share Posted July 4, 2018 Mine where same . Was told by mechanic ,that if system dries out ie. leaks and rubber hardens it cracks . The fluid put in get between layer of inner and jacket causing it to balloon or break . They are ready available from ebay , Robert.'s , Andy's , Hagens and maybe even NAPA . Get all three .. Link to comment Share on other sites More sharing options...
Wheelmang Posted July 4, 2018 Share Posted July 4, 2018 Just to echo Tom - You should be able to take them to just about any auto parts store and any good counter man can look them up by size. You may have to settle for something slightly longer if they do not have an exact match. Do not recommend going any shorter though. Link to comment Share on other sites More sharing options...
Spinneyhill Posted July 4, 2018 Share Posted July 4, 2018 DoT 4 is better than DoT 3. Higher boiling point, absorbs less water. Link to comment Share on other sites More sharing options...
JACK M Posted July 6, 2018 Share Posted July 6, 2018 This wasn't a result of wrong fluid. It was a result of age. 1 Link to comment Share on other sites More sharing options...
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