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<p class="MsoNormal"><span style="font-size:11.0pt">FWIW, when I was first putting Sophy on the road back 20 plus years ago, I had Jim Adney rebuild her master cylinder, calipers, and maybe her rear wheel cylinders. I also installed all new brake lines and
hoses. At that time, I filled the system with DOT 5 brake fluid. 20 plus years and 75K+ miles later with many mountain passes up and down and lots of twisty roads, the system is still performing flawlessly. I have never had to change the fluid or do anything
to the system. As a result, I have also changed over the fluid in Jill’s 67 Type 34 Karmann Ghia to DOT 5 and I will be changing over the fluid in our new to us 71 Westy to it when I replace the old rubber hoses this summer.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Sophy may look it, but she is definitely not a trailer-queen show car. <G><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">John<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">From:
</span></b><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">type3-vwtype3.org <type3-vwtype3.org-bounces@lists.vwtype3.org> on behalf of William Hoyer <wjhoyer@gmail.com><br>
<b>Date: </b>Monday, May 13, 2024 at 4:45</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">PM<br>
<b>To: </b>type3@vwtype3.org <type3@vwtype3.org><br>
<b>Subject: </b>Re: [T3] Battery Install, Oil Change & Brake Fluid Reservoir<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">DOT 5<br>
<br>
Here is what I found about DOT 5 brake fluid. Looks like 5.1 will work OK<br>
but it may not be non hygroscopic. I think I will stick with DOT 3.<br>
<br>
<br>
As counterintuitive as it is, DOT 5 is not intended for use in active<br>
braking systems. This a silicon-based fluid meant to be used in show<br>
vehicles. It’s more of a preservative than actual brake fluid. If you were<br>
to try and use this in a street vehicle, you’d end up with no brakes pretty<br>
soon.<br>
DOT 5.1<br>
<br>
Despite having that 5 in its name, DOT 5.1 is a whole different beast than<br>
DOT 5. DOT 5.1<br>
<<a href="https://www.eeuroparts.com/Parts/71260/Brake-Fluid-DOT-5-1-500ml-100951/">https://www.eeuroparts.com/Parts/71260/Brake-Fluid-DOT-5-1-500ml-100951/</a>> is<br>
a glycol-borate based fluid that has a high dry boiling point of 270C/500F.<br>
DOT 5.1 is backward compatible with DOT 4 and DOT 3. In fact, it’s the new<br>
standard for most vehicles.<br>
<br>
<br>
<o:p></o:p></span></p>
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