How often to flush/change dot 4?

The new DOT 5 fluid. As I said zero issues. That was spring of 2012. I replaced the front steel jumper lines on front calipers in 2017. When I bleed brakes I noticed nothing abnormal. Jumper lines were replaced as they had kinks.

70DusterBob said

What did you flush the old dot 3 out with?

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