Re: [Chrysler300] G brakes 'jerking' to right

["Ron Waters" <ronbo97@xxxxxxxxxxx>]

Hi Bob -

I don't want to get away from the topic of the original post, but just a few 
thoughts here.

You said that you found signs of moisture in your fluid. If you were using 
DOT 5, then that should not be possible as DOT 5 is non-hygroscopic. It 
doesn't absorb moisture. Any moisture that gets into the system would stay 
between the fluid and the brake line, possibly promoting corrosion of the 
line.I suspect that the corrosion that you found in your wheel cylinder is 
the non-absorbed moisture settling in one location. DOT 4 will absorb 
moisture, keeping the moisture away from the line. BTW, we're talking about 
tiny amounts here. My other issue with DOT 5 is the reported high failure 
rate of the hydraulic brake switch on the master cylinder. If I were to go 
to DOT 5, then I would set up a second switch on the brake pedal, just to be 
safe. BTW, I use Castrol LMA (Low Moisture Activity) brake fluid in my 
vintage cars, with very good results so far.

Most of us are guilty of not changing brake fluid often enough. I'm probably 
at the top of the list. :)

Ron



----- Original Message ----- 
From: "Bob Jasinski" <rpjasin@xxxxxxxxxxx>
To: "'Brandt Jimerson'" <brandt300g@xxxxxxxxx>; 
<Chrysler300@xxxxxxxxxxxxxxx>
Sent: Thursday, August 05, 2010 1:07 PM
Subject: RE: [Chrysler300] G brakes 'jerking' to right


> Brandt and all,


<snip>


>
> As a side note on silicone fluid, when I rebuilt my brake system on my G 
> in
> 1978, I put in all new brake components including wheel cylinders, hoses 
> and
> new master cylinder.  I flushed the old fluid out and went with DOT 5
> silicone fluid.  Thinking I would not need to again flush the fluid 
> because
> it was silicone, and wanting to perform a "test" I suppose, I  went 18
> years, to 1996, before I began to experience the same failure, pulling to
> one side.  I pulled the drum and found leakage in the lower front wheel
> cylinder, left side, disassembled it and found water had settled over time
> in the lowest spot causing the corrosion.  So in 1996 I rebuilt the system
> as related above, and have bled the system twice since then, the first in
> 2005, and just this last week end.  In 2005 the fluid did show some signs 
> of
> contamination and moisture, but this past weekend the old fluid showed 
> some
> discoloration but no signs of moisture, that's why I say 5 years is a 
> pretty
> good period for DOT 5 to be flushed and still maintain safety.
>
>
>
> Bob J
>
> 300G Convert owner since January 1978
>



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