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</head><body><p>I converted to DOT5 in both my Spits. I just purged the system both times and the only thing I had to rebuild is one caliper which began to seep a little. It has been 19 years on one car and a year on the second.</p><p><br></p><p>Joe</p><blockquote type="cite">On April 16, 2020 at 6:33 AM "Reihing, Randall S." <Randall.Reihing@utoledo.edu> wrote: <br> <br><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Hello All,</div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><br></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Thank you Randall for this valuable and important clarification. </div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><br></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">I am in the process of replacing just the rotors, calipers and two of the flexible brake lines to teh calipers. Can I drain out the existing DOT 4 and switch to DOT 5? </div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><br></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Or do I need to completely flush the entire system and replace all the wheel cylinder, master cylinder, and clutch master and slave cylinder seals when converting from DOT 4 to DOT 5? </div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><br></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Randall Reihing</div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;">1959 TR3A</div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><br></div> <br><hr style="display: inline-block; width: 98%;"><div id="ox-2257860b98-divRplyFwdMsg" dir="ltr"><span style="font-size: 11pt; color: #000000; font-family: Calibri, sans-serif;"><strong>From:</strong> Triumphs <triumphs-bounces@autox.team.net> on behalf of Randall <TR3driver@ca.rr.com><br> <strong>Sent:</strong> Thursday, April 16, 2020 1:55 AM<br> <strong>To:</strong> 'Sujit Roy' <triumphstag@gmail.com>; 'Triumphs' <triumphs@autox.team.net><br> <strong>Subject:</strong> [EXTERNAL] Re: [TR] Brake fluids again</span><div> </div></div><div class="ox-2257860b98-BodyFragment"><div class="ox-2257860b98-PlainText">All brake fluid is "synthetic" whether it says so on the can or not. It's <br> not made from petroleum distillate. <br> <br> Yes, DOT 4 will absorb water, eat paint and so on. Castrol claims theirs <br> absorbs slower than others (the "LMA"), but it still absorbs. <br> <br> DOT 5 is a completely different chemistry, a silicone oil rather than the <br> glycols used in DOT 3, 4 and 5.1. It does not absorb water, eat paint, <br> become corrosive over time, etc. <br> <br> Look for the word "silicone" on the label. DOT 5 must have it, the others <br> cannot have it. <br> <br> The word "synthetic" is totally meaningless for brake fluid. <br> <br> FWIW, both of my Stags have DOT 5 in them. <br> <br> -- Randall <br> <br> > I'm rebuild brakes and clutch with new seal on a Stag. I have <br> > this brake fluid <br> > <br> > <a href="https://urldefense.com/v3/__https://www.bpnorthwest.com/fluid-brake-clutch-castrol-lma-12-__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OfVfao68$"> https://urldefense.com/v3/__https://www.bpnorthwest.com/fluid-brake-clutch-castrol-lma-12-__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OfVfao68$</a> <br> > oz.html <br> > <br> > which says DOT 4 synthetic (Castrol) . If it is synthetic, <br> > will it absorb water? <br> > <br> > I'm a bit confused as people are saying get DOT5. synthetic. <br> > Is the buzz word synthetic? <br> <br> ** triumphs@autox.team.net ** <br> <br> Donate: <a href="https://urldefense.com/v3/__http://www.team.net/donate.html__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OEaR3rck$"> https://urldefense.com/v3/__http://www.team.net/donate.html__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OEaR3rck$</a> <br> Archive: <a href="https://urldefense.com/v3/__http://www.team.net/pipermail/triumphs__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OojB5CFg$"> https://urldefense.com/v3/__http://www.team.net/pipermail/triumphs__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OojB5CFg$</a> <a href="https://urldefense.com/v3/__http://www.team.net/archive__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OFP0OqSc$"> https://urldefense.com/v3/__http://www.team.net/archive__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OFP0OqSc$</a> <br> <br> Unsubscribe/Manage: <a href="https://urldefense.com/v3/__http://autox.team.net/mailman/options/triumphs/randall.reihing@utoledo.edu__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OOgiJ1gM$"> https://urldefense.com/v3/__http://autox.team.net/mailman/options/triumphs/randall.reihing@utoledo.edu__;!!LoBwcKfm!xQYsagVOFhpKFqJG0WkgFruEWat-p_lygSpuLlqbZWK-6UD6t-0Z-ZXm3e-xQY8OOgiJ1gM$</a> <br></div></div></blockquote><p class="default-style"><br> </p><blockquote type="cite">** triumphs@autox.team.net ** <br> <br>Donate: http://www.team.net/donate.html <br>Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive <br> <br>Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/spitlist@cox.net <br></blockquote><p class="default-style"><br> </p></body></html>