Mixing Brake Fluids
Senior Member
Joined: Jan 2003
Posts: 1,994
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But remember that DOT 5 isn't the same as DOT 5.1.
DOT 5 is silicone.
DOT 5.1 is poly-glycol just like 3 & 4, & it's mixable with 3 & 4.
I think(?) that even if you get ALL the 3/4 out, Honda's seals & stuff still don't like the silicone fluid.
DOT 5 is silicone.
DOT 5.1 is poly-glycol just like 3 & 4, & it's mixable with 3 & 4.
I think(?) that even if you get ALL the 3/4 out, Honda's seals & stuff still don't like the silicone fluid.