What brake fluid do I have ?

[Racer57]

How do you determine what brake fluid you have ? I didn't fill mine originally. I'm 90% sure that dot5 was used, but how do I know for sure ?

[Bullitt-]

 I Imagine the same test would apply to dot3 as far as water mixing...
Info I see says you can mix dot3 & 4  https://blog.amsoil.com/dot-3-and-dot-4-brake-fluid-whats-the-difference/

Using water to determine 4 or 5
https://youtu.be/0aMf3I0ez5s?t=97

[dodj]

I thought DOT5 was mandated to be purple?  and DOT3&4 are amber. 

[FSHTAIL]

I thought DOT5 was mandated to be purple?  and DOT3&4 are amber. 

It is somewhat of a purple pearl color when fresh, but ends up looking like all others..