[Healeys] Silicone DOT5 brakefluid for the 100

[Alan Seigrist]

Hi Greg -

Water is normal in the brake system, and Dot 5 floats on water, which means
any air humidity or condensation will eventually sink to the bottom of your
brakes over time.  Probably not much of a risk if you use your car all the
time, but probably would be smart to do a partial bleed of brakes every
couple of years to purge the system of any potential low sitting water.

Dot 3/4 absorbs water, so it's less of an issue from the corrosion
standpoint, well atleast if your fluid isn't too old.

Alan

'52 A90
'53 BN1
'59 Jag Mk IX
'64 BJ8


On Tue, Nov 10, 2009 at 8:18 AM, Greg Lemon <glemon at neb.rr.com> wrote:

> If DOT 5 doesn't absorb water how can any appreciable amount get into the
> system unless someone pours it in?  I understand that you might get some
> condensation but very small volume of air to get any appreciable amount of
> air in the system for it to condense out of, likewise some condensation when
> the system is open (cap off) but cant see again how an appreciable amount
> would get into the system limited surface area (and time) for condensation
> to occur.  Also, Count me as one who converted without doing more than
> blowing out the sytem with air, and no bad result, also really didn't notice
> any difference in pedal feel.
>
> Greg Lemon