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Old 10-15-2015, 07:20 PM
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DOT 3 vs. DOT 4 brake fluid

Old 07-27-2015, 12:19 PM
  #11  
Roy_R
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Originally Posted by dusman59
Never use dot 5 in our systems. Dot 4 needs to be flushed once a year with normal driving. You can use dot 5.1 also and that requires a flush every 2 years.
Must work for a dealer - flushed once a year?
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Old 07-27-2015, 01:06 PM
  #12  
Art161
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Originally Posted by dusman59
Never use dot 5 in our systems. Dot 4 needs to be flushed once a year with normal driving. You can use dot 5.1 also and that requires a flush every 2 years.
Originally Posted by Roy_R
Must work for a dealer - flushed once a year?
DOT 4 absorbs water more readily than DOT 3 or DOT 5.1.
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