No, they do not all mix. DOT 5 is it's own animal. It's made of a synthetic material and cannot be mixed with DOT 3 or 4. If mixed you will loose the temperature resistance, its anti-corrosion properties, and it will turn a cloudy color.
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Agree.
3x... Dot 5 is a silicone base product. its not good to use on a normal street car as it does not absorb water, normally a good thing but the water ends up in the wheel cylinders or pistons and will rust quickly...
