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Does anyone have an opinion as to the accuracy of those cheepo pen style
brake fluid moisture detectors ?
You dip the probes into the reservoir and they give led indication for
range % moisture present.
Just wondering ... ??
rg
On Mon, Jul 26, 2021 at 4:55 AM bluehealey <bluehealey@gmail.com> wrote:
> Now that is a perfect checklist Simon. Captures everything you need to
> know.
> In addition I work on the basis that glycol mixtures, if neglected (not
> flushed) for more than 3-4 years, can cause minor problems with the
> hardware.
> Silicone, if neglected for a similar period, can cause major problems wit=
h
> the hardware.
> Guess which I choose to use.
>
> AlanB - iPhone message.
>
> > On 26 Jul 2021, at 09:57, Simon Lachlan via Healeys <
> healeys@autox.team.net> wrote:
> >
> > =EF=BB=BF
> >
> > I was getting myself in a muddle over brake fluid once so I made myself
> some
> > notes. Probably pinched from Google; I don't recall:-
> >
> > 1) All brake fluid is "synthetic".it's not a "natural" product.
> > 2) Most synthetic fluids are NOT silicone. They are polyethylene
> glycol
> > ether based.
> > 3) DOT 3 & 4, which can be mixed, are not silicone. They are glycol.
> > 4) DOT 5, which cannot be mixed with 3 or 4, is silicone. Can't be
> > mixed with anything!
> > 5) DOT 5.1 is glycol based and cannot be mixed with DOT 5.
> > 6) DOT 5.1 can be mixed with DOT 3 or 4, as both are glycol based.
> >
> > The word "synthetic" began to appear when manufacturers worked out that
> it
> > made regular brake fluid sound more special ie they could charge us mor=
e
> > money for the same old stuff.
> >
> > DOT stands for Dept. Of Transport and relates to the fluids' boiling
> points.
> > If a car brakes at high speed, the brakes get hot. Some heat is carried
> away
> > from the brakes by the brake fluid. Bad news if the fluid boils! The
> faster
> > you're going, the higher DOT you need. Higher DOT numbers indicate high=
er
> > boiling points for "Dry" fluid (has not absorbed any water) and "Wet"
> fluids
> > (has absorbed water). ie, the wetter it is, the more problematic it
> becomes.
> > Mixing 3 with 4 lowers the boiling points and vice verca.
> >
> > _______________________________________________
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> >
> > Unsubscribe/Manage:
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> >
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<div dir=3D"ltr"><div>Does anyone have an opinion as to the accuracy of tho=
se cheepo pen style brake fluid moisture detectors ?</div><div>You dip the =
probes into the reservoir and they give led indication for range % moisture=
present.</div><div>Just wondering ... ??</div><div>rg<br></div></div><br><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jul=
26, 2021 at 4:55 AM bluehealey <<a href=3D"mailto:bluehealey@gmail.com"=
>bluehealey@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex">Now that is a perfect checklist Simon. Captures everyt=
hing you need to know. <br>
In addition I work on the basis that glycol mixtures, if neglected (not flu=
shed) for more than 3-4 years, can cause minor problems with the hardware. =
<br>
Silicone, if neglected for a similar period, can cause major problems with =
the hardware. <br>
Guess which I choose to use. <br>
<br>
AlanB - iPhone message.<br>
<br>
> On 26 Jul 2021, at 09:57, Simon Lachlan via Healeys <<a href=3D"mai=
lto:healeys@autox.team.net" target=3D"_blank">healeys@autox.team.net</a>>=
; wrote:<br>
> <br>
> =EF=BB=BF<br>
> <br>
> I was getting myself in a muddle over brake fluid once so I made mysel=
f some<br>
> notes. Probably pinched from Google; I don't recall:-<br>
> <br>
> 1)=C2=A0 =C2=A0 All brake fluid is "synthetic".it's not =
a "natural" product.<br>
> 2)=C2=A0 =C2=A0 Most synthetic fluids are NOT silicone. They are polye=
thylene glycol<br>
> ether based.<br>
> 3)=C2=A0 =C2=A0 DOT 3 & 4, which can be mixed, are not silicone. T=
hey are glycol.<br>
> 4)=C2=A0 =C2=A0 DOT 5, which cannot be mixed with 3 or 4, is silicone.=
Can't be<br>
> mixed with anything!<br>
> 5)=C2=A0 =C2=A0 DOT 5.1 is glycol based and cannot be mixed with DOT 5=
.<br>
> 6)=C2=A0 =C2=A0 DOT 5.1 can be mixed with DOT 3 or 4, as both are glyc=
ol based.<br>
> <br>
> The word "synthetic" began to appear when manufacturers work=
ed out that it<br>
> made regular brake fluid sound more special ie they could charge us mo=
re<br>
> money for the same old stuff.<br>
> <br>
> DOT stands for Dept. Of Transport and relates to the fluids' boili=
ng points.<br>
> If a car brakes at high speed, the brakes get hot. Some heat is carrie=
d away<br>
> from the brakes by the brake fluid. Bad news if the fluid boils! The f=
aster<br>
> you're going, the higher DOT you need. Higher DOT numbers indicate=
higher<br>
> boiling points for "Dry" fluid (has not absorbed any water) =
and "Wet" fluids<br>
> (has absorbed water). ie, the wetter it is, the more problematic it be=
comes.<br>
> Mixing 3 with 4 lowers the boiling points and vice verca.<br>
> <br>
> _______________________________________________<br>
> Support Team.Net <a href=3D"http://www.team.net/donate.html"; rel=3D"no=
referrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
> Suggested annual donation=C2=A0 $12.75<br>
> <br>
> Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"nore=
ferrer" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a href=
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p://autox.team.net/archive</a><br>
> <br>
> <a href=3D"mailto:Healeys@autox.team.net"; target=3D"_blank">Healeys@au=
tox.team.net</a><br>
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</blockquote></div>
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