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..the only negative I've ever encountered with Dot 5 in our old cars is it =
does not lubricate the rubber as well as older fluids.
Synth and natural rubber also react differently ...as with everything with =
LBC's... =C2=A0 ymmv
ptegler
-----Original Message-----
From: TERRY SMITH <terryrs@comcast.net>
To: Randall <TR3driver@ca.rr.com>; Sujit Roy <triumphstag@gmail.com>
Cc: Triumphs <triumphs@autox.team.net>
Sent: Thu, Nov 29, 2018 11:07 am
Subject: Re: [TR] Brake fluid for Triumph
When restoring my 3A in 2002, while the body was off the frame I replaced a=
ll the brake lines and hydraulic cylinders.=C2=A0 I learned about Dot 5 sil=
icone based fluid from the List then and went with it. After 15 years of dr=
iving, the same brake system remains rock solid plus I never blistered pain=
t with the occasional spill.=C2=A0 Doesn't silicone wear easier on rubber s=
eals?
Terry Smith, '59 TR3A=C2=A0 TS 58667
New Hampshire, where early snows have sent both bears and Triumphs off to t=
he Land of Nod=20
> On November 28, 2018 at 7:58 PM Randall <TR3driver@ca.rr.com> wrote:
>=20
>=20
>=20
> > Can I use DOT 5 in the Stag? Do I need to flush out the=20
> > current DOT 3/ 4?
>=20
> Both of my Stags have DOT 5 in them.=C2=A0 LE1473 was converted just by b=
leeding
> through at each corner until clean purple fluid appeared.=C2=A0 The other=
one
> (dubbed Frankenstag because it appears to be parts from at least 3 differ=
ent
> cars) had a failed MC and stuck rear wheel cylinders when I got it, so th=
ose
> were repaired at the same time.
>=20
> However, LE1473 already had what seemed to be a minor master cylinder
> problem before the conversion (pedal would sometimes drop towards floor
> while sitting at a stop light), and it suddenly got a whole lot worse not
> long after the conversion (no hydraulic brakes at all).=C2=A0 (I also lea=
rned
> that the back brakes on a Stag are more prone to fade than a TR3.)
> Post-mortem showed both MC piston seals torn, and approximately the
> consistency of Gummi Bears.
>=20
> So I'd have to say that "best practice" is probably to replace the seals =
at
> the same time.
>=20
> Randall
>=20
> ** triumphs@autox.team.net **
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs http://www.team.net/arch=
ive
>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/terryr=
s@comcast.net
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Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archiv=
e
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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt;=
color:black;">..the only negative I've ever encountered with Dot 5 in our o=
ld cars is it does not lubricate the rubber as well as older fluids.<br>Syn=
th and natural rubber also react differently ...as with everything with LBC=
's... ymmv<br><br>ptegler<br><br><br>-----Original Message-----<br>F=
rom: TERRY SMITH <terryrs@comcast.net><br>To: Randall <TR3driver@c=
a.rr.com>; Sujit Roy <triumphstag@gmail.com><br>Cc: Triumphs <t=
riumphs@autox.team.net><br>Sent: Thu, Nov 29, 2018 11:07 am<br>Subject: =
Re: [TR] Brake fluid for Triumph<br><br></div><div dir=3D"ltr">When restori=
ng my 3A in 2002, while the body was off the frame I replaced all the brake=
lines and hydraulic cylinders. I learned about Dot 5 silicone based =
fluid from the List then and went with it. After 15 years of driving, the s=
ame brake system remains rock solid plus I never blistered paint with the o=
ccasional spill. Doesn't silicone wear easier on rubber seals?<br cle=
ar=3D"none"><br clear=3D"none">Terry Smith, '59 TR3A TS 58667<br clea=
r=3D"none">New Hampshire, where early snows have sent both bears and Triump=
hs off to the Land of Nod <br clear=3D"none"><br clear=3D"none"><br clear=
=3D"none">> On November 28, 2018 at 7:58 PM Randall <<a shape=3D"rect=
" ymailto=3D"mailto:TR3driver@ca.rr.com"; rel=3D"noopener noreferrer" href=
=3D"mailto:TR3driver@ca.rr.com";>TR3driver@ca.rr.com</a>> wrote:<br clear=
=3D"none">> <br clear=3D"none">> <br clear=3D"none">> <br clear=3D=
"none">> > Can I use DOT 5 in the Stag? Do I need to flush out the <b=
r clear=3D"none">> > current DOT 3/ 4?<br clear=3D"none">> <br cle=
ar=3D"none">> Both of my Stags have DOT 5 in them. LE1473 was conv=
erted just by bleeding<br clear=3D"none">> through at each corner until =
clean purple fluid appeared. The other one<br clear=3D"none">> (du=
bbed Frankenstag because it appears to be parts from at least 3 different<b=
r clear=3D"none">> cars) had a failed MC and stuck rear wheel cylinders =
when I got it, so those<br clear=3D"none">> were repaired at the same ti=
me.<br clear=3D"none">> <br clear=3D"none">> However, LE1473 already =
had what seemed to be a minor master cylinder<br clear=3D"none">> proble=
m before the conversion (pedal would sometimes drop towards floor<br clear=
=3D"none">> while sitting at a stop light), and it suddenly got a whole =
lot worse not<br clear=3D"none">> long after the conversion (no hydrauli=
c brakes at all). (I also learned<br clear=3D"none">> that the bac=
k brakes on a Stag are more prone to fade than a TR3.)<br clear=3D"none">&g=
t; Post-mortem showed both MC piston seals torn, and approximately the<br c=
lear=3D"none">> consistency of Gummi Bears.<br clear=3D"none">> <br c=
lear=3D"none">> So I'd have to say that "best practice" is probably to r=
eplace the seals at<br clear=3D"none">> the same time.<br clear=3D"none"=
>> <br clear=3D"none">> Randall<br clear=3D"none">> <br clear=3D"n=
one">> ** <a shape=3D"rect" ymailto=3D"mailto:triumphs@autox.team.net"; r=
el=3D"noopener noreferrer" href=3D"mailto:triumphs@autox.team.net";>triumphs=
@autox.team.net</a> **<br clear=3D"none">> <br clear=3D"none">> Donat=
e: <a shape=3D"rect" target=3D"_blank" rel=3D"noopener noreferrer" href=3D"=
ar=3D"none">> Archive: <a shape=3D"rect" target=3D"_blank" rel=3D"noopen=
er noreferrer" href=3D"http://www.team.net/pipermail/triumphs";>http://www.t=
eam.net/pipermail/triumphs </a> <a shape=3D"rect" target=3D"_blank" rel=3D"=
noopener noreferrer" href=3D"http://www.team.net/archive";>http://www.team.n=
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anage: <a shape=3D"rect" target=3D"_blank" rel=3D"noopener noreferrer" href=
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p://autox.team.net/mailman/options/triumphs/terryrs@comcast.net</a><div cla=
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