<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I have flushed using denatured alcohol then flushed with compressed air at low psi <br><br>Ronnie</div><div><br>On Mar 29, 2016, at 11:06 PM, Cliff Hansen <<a href="mailto:cliff_hansen@outlook.com">cliff_hansen@outlook.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div>I had to change all the hoses - they all leaked after I switched to DOT5. I'd already rebuilt the calipers and cylinders and had new brake lines I suppose I shouldn't had reused the hoses.</div>
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<div>Cliff<br>
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<div class="gmail_quote">On Tue, Mar 29, 2016 at 7:29 PM -0700, "Dave Connitt" <span dir="ltr">
<<a href="mailto:dconnitt@fuse.net" target="_blank">dconnitt@fuse.net</a>></span> wrote:<br>
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<div class="PlainText">Randall,<br>
Interesting. I have been running DOT3 in my TR4A since I got the car<br>
drivable (about 2 years now) and only used DOT3 because there was a big<br>
sticker on the side of the master cylinder telling me "USE ONLY DOT 3 BRAKE<br>
FLUID OR WARRENTY IS VOID". I was wondering how big a PIA it would be to<br>
flush out the DOT3 fluid and replace it with DOT5. I have read many posts on<br>
this list where people have used DOT 5 with no issues so I am considering<br>
changing over as I should probably replace the current fluid after 2 years<br>
anyway.<br>
Dave Connitt<br>
<br>
-----Original Message-----<br>
From: Triumphs [<a href="mailto:triumphs-bounces@autox.team.net">mailto:triumphs-bounces@autox.team.net</a>] On Behalf Of Randall<br>
Sent: Monday, March 28, 2016 4:09 PM<br>
Cc: <a href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a><br>
Subject: Re: [TR] TR6 brake master cylinder<br>
<br>
<br>
> That was going to be my next question. About how carefully one had to <br>
> drain the dot 4 when installing dot 5. It sounds like I can put in my <br>
> fresh MC, fill it with silicone, then bleed each brake till I see <br>
> purple fluid.<br>
<br>
Another contested question. My experience is as Paul said, just "bleeding<br>
through" will not remove all of the old brake fluid from the system.<br>
However, I saw no ill effects from the small pockets of old fluid left over.<br>
The DOT 5 will not mix with the old fluid, and is slightly less dense, so<br>
you get little pockets of fluid in corners that don't get used (like the<br>
base of the rear slave cylinders). The DOT 5 also surrounds it, so it can't<br>
promote corrosion (and I assume not absorb water or salt).<br>
<br>
Main disadvantage seems to be that the remaining DOT 3/4 will suck all the<br>
purple dye out of the DOT 5.<br>
<br>
Randall<br>
<br>
<br>
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