Is all brake fluid the same?
DO we need synthetic brake fluid for our cars? What kinddo we put in? The manual just says DOT 3. Is that Conventional? Synthetic? What happens if I mix. I baught my car used, dont know whats it in now.

 

Yes, you can mix it. Conventional comes in the car. You can mix conventional and synthetic, just don't mix grades.

Quick side note: DOT5 brake fluid is the one that WILL NOT mix with DOT3 or DOT4.