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[6pack] DOT 5 leads to hydraulic component failures

To: 6pack@autox.team.net
Subject: [6pack] DOT 5 leads to hydraulic component failures
From: Glenn Franco <gaf3@charter.net>
Date: Sat, 09 Feb 2013 18:20:50 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: 6pack@autox.team.net
References: <mailman.11.1360436403.18609.6pack@autox.team.net>
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I spent the last 8 years of my career in Brake Engineering with TRW 
(owns Lucas) as my supplier.
There are a multitude or reasons why they will not warranty components 
that use Dot5

  * All their bench durability and life testing is primarily done with
    DOT 3 or 4
  * DOT 5 is not Hygroscopic and does not absorb moisture
  * All Fluid boil tests are done with DOT 3 or 4 with max H20 absorption
  * Field testing in Death Valley is done with DOT 3
  * The legal staff probably warned them against it.

That being said I have used Silicone DOT 5 in My TR6 for the past 4 
years with no problems or lifted paint.

With any fresh brake builds I use Silicone DOT 5.

Just my 2 cents worth
Glenn

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