How do I know what break fluid was used?

[livi]

For some reason I thought it was kind of the other way around. DOT 5 silicon based with very little attraction to water, hence very good for long term use, parking etc.

I have been wrong many times before on this forum however..

[Bill Verburg]

The water still gets into the system and proceeds to the lowest point, where it does it's thing.

the biggest issue though is air in the DOT5 fluid which is extremely difficult(might as well say impossible) to remove. The air and the actual compressibility of the silicone based fluid itself(especially at high temp) make it unsuitable for most applications.

[livi]

I learn more useful stuff here than I did in high school. Amazing.

Thanks again Bill!

[randywebb]

Markus - What you posted above is what at least some thought before they found out what Bill referred to - I've also seen it written places.

[jaydubya]

Best way to determine which brake fluid you are running is by taste.