Braking questions

[fuzzyonion]

If it happened suddenly, there could be a leak in a line, or the master crapped out on you. How's the fluid level?

Brake fluid matters in that you should get a DOT approved fluid rated at a temperature over what your brakes will be seeing. DOT 3 or 4 on the street is fine.

Fluids also have different rates of moisture absorption and corrosion resistance degradation. DOTs 3 and 4 should be flushed about every 3-4 years, others may specify more frequent flushing.

Also do not mix silicone and glycol based fluids. Synthetic is not the same as silicone. Synth is still glycol based and can be mixed with non-synth, though it lowers its effectiveness.

Basically, unless fluid is leaking or boiling (or dot5 frothing) it cant really cause a low pedal.