Hello Jerry,
I have used Dot 5 brake fluid for over 20 years. At about 20 years of use I
had to rebuild the rear wheel cylinders that I had replaced in 1989. The
reason for the rebuild was because I had bought and used a quart of DOT 5.1 by
mistake! It took a while for the failure to occur. I mixed the two different
brake fluid.
Regards,
Robert Perry
-----Original Message-----
>From: Jerry Shaw <slowtoaccept@yahoo.com>
>Sent: Feb 8, 2013 5:08 PM
>To: 6pack@autox.team.net
>Subject: [6pack] DOT 5 leads to hydraulic component failures
>
>This is probably old news, but I have just had two hydraulic component
>failures using DOT 5. Now I understand from Leighton of British Car Parts
>Northwest www.bpnorthwest.com that quote, b None of the cylinder
>manufactures (Girling, TRW, AP, ATE) recommend or will warranty cylinders
that
>have been used with DOT 5. They state the cylinders are not designed for use
>with DOT 5 fluid which will lead to failure. One reason is the DOT 5 fluid
>does not have as high lubricity as the DOT 4 which will leave to pre-mature
>seal failure.b
>
>I hope that suppliers of DOT 5 have disclaimers. Ibve probably missed that
>email.
>
>Jerry
>
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