I once heard that DOT 5 silicone fluid does not
lubricate (as well as old DOT 3 or 4) the contact surface between the wheel
cylinder seal and the wall of the iron cylinder, and this causes premature wear
of the seal. On vehicles with limited driving, this would not be a problem, but
on daily drivers it might. The surface finish of the wall may also play a part.
Dave
Homstad
56 Dodge
D500
-----Original
Message-----
From: Forward Look Mopar Discussion
List [mailto:L-FORWARDLOOK@xxxxxxxxxxxxx]On
Behalf Of Bjwt56@xxxxxxx
Sent: Saturday, November 21, 2009
6:39 AM
To: L-FORWARDLOOK@xxxxxxxxxxxxx
Subject: Re: [FWDLK] Brake fluid
Don:
When I put my 56 back together I put DOT 5 brake fluid
in it and everything is fine. One nice thing about DOT 5 is that it will
not harm paint when spilled on it. I was warned that DOT 5 would cause
the cylinder seals to deteriorate, so I soaked some seals in DOT 5 for a couple
months before I put the fluid in the car. Nothing happended to the seals
and I have been running the stuff for at least a decade.
John
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