<div dir="ltr"><div>I also have switched 3 cars (2 TRs & Jaguar) from DOT 3/4 to DOT5 by simply sucking the reservoir dry, filling it with DOT5 and bleeding the system until DOT5 came out of all bleeders.</div><div><br></div><div>In the years since (17, 16 and 5 years respectively) I have had no problems attributable to this 'conversion'.</div><div><br></div><div>YMMV of course, but this is what worked for me.</div><div><br></div><div>Geo</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Sep 9, 2017 at 11:15 AM, Randall <span dir="ltr"><<a href="mailto:tr3driver@ca.rr.com" target="_blank">tr3driver@ca.rr.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" vlink="#954F72" link="blue"><span>Cliff Hansen <<a href="mailto:cliff_hansen@outlook.com" target="_blank">cliff_hansen@outlook.com</a>> wrote:<br>
<br>
You can’t switch from DOT3/4 to DOT 5 without replacing _all_ of the non-metal parts: caliper seals, hoses, master cylinder seals, and thoroughly cleaning the metal parts.<br>
<br></span>
Actually you can. I've done it several times, including that Chevy I mentioned before and it has worked out reasonably well for me. I just filled the reservoir and bled at each corner until I got only clean, purple fluid.<br>
<br>
I suspect you don't get the full benefit of DOT 5 that way, but it worked for me. The leftover DOT 3/4 seems to collect in pockets that eventually turn to black goo, but only in places where it doesn't block flow (like the dead space in wheel cylinders). <br>
<br>
Didn't fix the leaky caliper on my old motorhome, but it did slow the leak way down. The rebuild kit that I eventually found for it is still on the shelf in the garage, even though the motorhome has been gone for 15 years <g><span class="HOEnZb"><font color="#888888"><br>
<br>
-- Randall</font></span><div><div class="h5"><br><br><div class="gmail_quote">On 9 September 2017 13:04:20 GMT-04:00, Cliff Hansen <<a href="mailto:cliff_hansen@outlook.com" target="_blank">cliff_hansen@outlook.com</a>> wrote:<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
<div class="m_-6936696428425598282WordSection1">
<p class="MsoNormal">You can’t switch from DOT3/4 to DOT 5 without replacing _<i>all</i>_ of the non-metal parts: caliper seals, hoses, master cylinder seals, and thoroughly cleaning the metal parts. I’m guessing that they used DOT3 brake fluid as a lubricant
when they assembled the master cylinder.</p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">
Mail</a> for Windows 10</p>
<p class="MsoNormal"></p><p> </p>
<div style="border-width:1pt medium medium;border-style:solid none none;border-color:rgb(225,225,225) currentColor currentColor;padding:3pt 0in 0in">
<p class="MsoNormal" style="padding:0in;border:currentColor"><b>From: </b><a href="mailto:forzion7@gmail.com" target="_blank">David Friedlander</a><br>
<b>Sent: </b>Saturday, September 9, 2017 9:13 AM<br>
<b>To: </b><a href="mailto:TR3driver@ca.rr.com" target="_blank">Randall</a><br>
<b>Cc: </b><a href="mailto:triumphs@autox.team.net" target="_blank">TR3 Triumphs</a>; <a href="mailto:anncarletta@yahoo.com" target="_blank">
Ann Carletta</a><br>
<b>Subject: </b>Re: [TR] Brake Fluid for TR3A</p>
</div>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">Randall;</span><p></p><p></p>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS""></span><p> </p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">I am installing new brake master cylinders in my TR3 and the boxes </span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">theycame in had the label you can see in the attached photo. </span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">What do you make of this?</span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS""></span><p> </p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">I run DOT5 in my TR6 without issue but am rebuilding this </span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">TR3 and wanted to use DOT5 here as well...</span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS""></span><p> </p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">Thanks,</span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS""></span><p> </p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">Dave Friedlander</span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS"">Maine</span><p></p><p></p>
</p></div>
<div>
<p class="MsoNormal"><span style="color:rgb(0,0,153);font-family:"Comic Sans MS""></span><p> </p><p></p>
</p></div>
<div>
<p class="MsoNormal"></p><p> </p>
<div>
<p class="MsoNormal">On Sat, Sep 9, 2017 at 2:35 AM, Randall <<a href="mailto:TR3driver@ca.rr.com" target="_blank">TR3driver@ca.rr.com</a>> wrote:</p><p></p>
<blockquote style="border-width:medium medium medium 1pt;border-style:none none none solid;border-color:currentColor currentColor currentColor rgb(204,204,204);padding:0in 0in 0in 6pt;margin-right:0in;margin-left:4.8pt">
<p class="MsoNormal">There is no clear consensus on brake fluid. Some of us love DOT 5 silicone,<br>
others hate it.<br>
<br>
But I do recommend that you find out what you have before topping up; and<br>
also look for where it is leaking. Since this is a single circuit braking<br>
system, it only takes one leak to rob you of all hydraulic brakes. Not a<br>
good feeling, especially when you're going downhill into an underground<br>
parking garage, and the handbrake is also broken!<br>
<br>
Also, if you don't have DOT 5, any other brake fluid will eat paint promptly<br>
and promote rust. And any of them will ruin the rear brake shoes if it gets<br>
on them.<br>
<br>
If you do use one of the non-silicone formulas, you also shouldn't keep an<br>
old can of it. They suck moisture directly from the air, once the can has<br>
been opened, and start getting old. That's why you should always open a new<br>
can; and change it in your braking system every few years, even if you don't<br>
drive the car. (Just one of the many reasons I like DOT 5, it doesn't suck<br>
<g>)<br>
<br>
Here is a good article (IMO) on the pros & cons of DOT 5<br>
<a href="http://www.buckeyetriumphs.org/technical/Brakes/Fluid/Fluid.htm" target="_blank">http://www.buckeyetriumphs.<wbr>org/technical/Brakes/Fluid/<wbr>Fluid.htm</a><br>
If you are a glutton for punishment, you can also find the SAE papers that<br>
it references here<br>
<a href="https://drive.google.com/open?id=0B2H2NJt34OffdnhWS19scjlNUU0" target="_blank">https://drive.google.com/open?<wbr>id=<wbr>0B2H2NJt34OffdnhWS19scjlNUU0</a><br>
<br>
Of all the TR3s I've driven and owned, only my current "barn find" 56 needed<br>
lead (substitute). I eventually changed the head, and now I don't use lead.<br>
My previous TR3A engine went well over 100,000 miles without ever having<br>
lead added.<br>
<span style="color:rgb(136,136,136)"><br>
<span class="m_-6936696428425598282hoenzb">-- Randall</span></span></p><p></p>
<div>
<div>
<p class="MsoNormal"><br>
<br>
<br>
** <a href="mailto:triumphs@autox.team.net" target="_blank">triumphs@autox.team.net</a> **<br>
<br>
Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.<wbr>html</a><br>
Archive: <a href="http://www.team.net/archive" target="_blank">http://www.team.net/archive</a><br>
Forums: <a href="http://www.team.net/forums" target="_blank">http://www.team.net/forums</a><br>
Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/triumphs/forzion7@gmail.com" target="_blank">
http://autox.team.net/mailman/<wbr>options/triumphs/forzion7@<wbr>gmail.com</a></p><p></p>
</div>
</div>
</blockquote>
</div>
</div>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal"></p><p> </p>
</p></div>
</blockquote></div></div></div></div><br><br>
** <a href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a> **<br>
<br>
Donate: <a href="http://www.team.net/donate.html" target="_blank" rel="noreferrer">http://www.team.net/donate.<wbr>html</a><br>
Archive: <a href="http://www.team.net/archive" target="_blank" rel="noreferrer">http://www.team.net/archive</a><br>
Forums: <a href="http://www.team.net/forums" target="_blank" rel="noreferrer">http://www.team.net/forums</a><br>
Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/triumphs/ahwahneetr@gmail.com" target="_blank" rel="noreferrer">http://autox.team.net/mailman/<wbr>options/triumphs/ahwahneetr@<wbr>gmail.com</a><br>
<br></blockquote></div><br></div>