Brake Fluid DOT 3 Synthetic- any Good?

Has anyone tried the Synthetic version of DOT 3? I assume it doesn't destroy paint like the old stuff. I have used Dot 5 in a recent build, is the DOT 3 Synthetic a better route for the old cars, or does it make much difference vs. Dot 5?

I put DOT 3 syntetic in my '89 Diplomat (if you consider that older car) without realizing it was synthetic until it was too late. No problems whatsoever.

DOT 3 will still harm paint. Only DOT 5 which is a silicone fluid will not.

I think all brake fluid is "synthetic". They are all mixable (even silicone! though not recommended). No problem with DOT 3 "synthetic" mixing.

Thanks. I'll stick with dot 5 then since I've had good luck with it. I was st Meijer and saw the dot 3 synthetic and was just wondering.

Don't mix DOT 5 with DOT 3 or 4,serious seal swelling will result.
RT

Sounds like a warning for Viagra

Disclaimer: Don't drink them either!

Myth. In order to receive DOT certification, all DOT fluids must be able to coexist in the same system with no ill effects.

Correct John, my NAPA guys showed me written certification of compatibility.

Joe

Marketing gimmick. ALL brake fluid is synthetic.

But it wasn't always right?