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DOT5 and DOT 5.1 are NOT compatible.
=20
I=E2=80=99ve have been using Bel-Ray DOT5 SBF in my BN2 and my tri-carb =
since 1992.
I=E2=80=99ve never had a problem.
=20
Mark
Ardmore, NZ
=20
From: Bob Spidell <bspidell@comcast.net>=20
Sent: Monday, 31 October 2022 5:35 PM
To: healeys@autox.team.net
Subject: Re: [Healeys] Brake Fluid
=20
"... There is a newer Glycol Ester DOT5 ..."
I think you're referring to 'DoT5.1' I also think it was deliberately =
named so as to confuse the issue.
On 10/30/2022 8:05 PM, Christopher Moog via Healeys wrote:
I've used both. Currently prefer DOT4.
Also everyone is speaking of DOT5 but there are now two different DOT5s. =
The first is the older silicone based DOT5. There is a newer Glycol =
Ester DOT5 that is compatible with DOT3 and DOT4. It has a lower =
viscosity than the DOT3 and DOT4 so it works better in some ABS systems. =
It also has a higher boiling point than DOT3 and DOT4. Don't see an =
advantage in Healeys.
On 10/30/2022 10:00 PM, Alan Seigrist wrote:
The best selling point for Dot 4 is you can mix any Dot 4 or even Dot 3 =
if you need to fill up. As I understand it with Dot 5 you should be =
careful to always use the same brand to fill up if necessary.
Also, neither Dot 5 not Dot 4 is great for sitting a long time, Dot 4 =
absorbs water, Dot 5 will push any water down into the components.
Dot 4, if the car is not used regularly, needs to be flushed every =
couple of years.
=20
On Mon, Oct 31, 2022 at 5:43 AM Michael MacLean =
At this point in the restoration I have a completely rebuilt brake =
system with all new components and tubing. Now is the time to make the =
decision to use DOT 4 or Silicone. What's the consensus, if there is =
one?
Mike MacLean
=20
=20
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class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>DOT5 and DOT 5.1 are <b>NOT</b> =
compatible.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>I=E2=80=99ve have been using Bel-Ray DOT5 SBF in my BN2 and my =
tri-carb since 1992.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>I=E2=80=99ve never had a problem.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Mark<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Ardmore, NZ<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></spa=
n></p><div><div style=3D'border:none;border-top:solid #E1E1E1 =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><span lang=3DEN-US> Bob Spidell =
<bspidell@comcast.net> <br><b>Sent:</b> Monday, 31 October 2022 =
5:35 PM<br><b>To:</b> healeys@autox.team.net<br><b>Subject:</b> Re: =
[Healeys] Brake Fluid<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>"... There is a newer Glycol Ester =
DOT5 ..."<br><br>I think you're referring to 'DoT5.1' I also =
think it was deliberately named so as to confuse the =
issue.<br><br><o:p></o:p></p><div><p class=3DMsoNormal>On 10/30/2022 =
8:05 PM, Christopher Moog via Healeys =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>I've used both. Currently prefer =
DOT4.<br><br>Also everyone is speaking of DOT5 but there are now two =
different DOT5s. The first is the older silicone based DOT5. There is a =
newer Glycol Ester DOT5 that is compatible with DOT3 and DOT4. It has a =
lower viscosity than the DOT3 and DOT4 so it works better in some ABS =
systems. It also has a higher boiling point than DOT3 and DOT4. Don't =
see an advantage in Healeys.<br><br><o:p></o:p></p><div><p =
class=3DMsoNormal>On 10/30/2022 10:00 PM, Alan Seigrist =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>The best selling point for Dot 4 is you =
can mix any Dot 4 or even Dot 3 if you need to fill up. As I =
understand it with Dot 5 you should be careful to always use the same =
brand to fill up if necessary.<br><br>Also, neither Dot 5 not Dot 4 is =
great for sitting a long time, Dot 4 absorbs water, Dot 5 will push any =
water down into the components.<br><br>Dot 4, if the car is not used =
regularly, needs to be flushed every couple of =
years.<br><br><o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Mon, Oct 31, 2022 at 5:43 AM Michael MacLean <<a =
href=3D"mailto:springer.mike51@gmail.com";>springer.mike51@gmail.com</a>&g=
t; wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p =
class=3DMsoNormal>At this point in the restoration I have a completely =
rebuilt brake system with all new components and tubing. Now is =
the time to make the decision to use DOT 4 or Silicone. What's the =
consensus, if there is one?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Mike MacLean<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p></blockquote></div></blockquote></=
blockquote><p class=3DMsoNormal><o:p> </o:p></p></div></body></html>
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