Re: [Chrysler300] Dot 4 mixed with Dot 5 Silicone

["Charlie Valentine" <cross.ram@xxxxxxxxxxx>]

Just an idea !!!!    If you disconnected the brake line at the master 
cylinder and at each wheel cylinder and used compressed air to blow the 
lines clean first, then the lines are pretty clean and you are flushing them 
minimally and the new fluid is mainly flushing the wheel cylinders. Also 
when you disconnect the line from the M.C. would most of that fluid drain 
out on its own?
My thinking is if the master cylinder and brake lines and hoses are 90% 
clean from the compressed air, the new fluid will have minimal "old stuff" 
to mix with and you just might get a cleaner flush.

Any thoughts, comments and advice, be they good or bad, on my terrific idea 
would be greatly appreciated.
Bye for now and have a wonderful holiday weekend.

Charlie Valentine
300G, 62 300 Sport Convertible

----- Original Message ----- 
From: "Warren Anderson" <wranderson@xxxxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>; <Chrysler300@xxxxxxxxxxxxxxx>; 
<mjraguse@xxxxxxx>
Sent: Saturday, May 28, 2005 12:39 AM
Subject: Re: [Chrysler300] Dot 4 mixed with Dot 5 Silicone


>
>
>
>> I have just discovered that one of my cars which I thought had Dot 3 or 4
>> actually has silicone and last month I topped off the master cylinder 
>> with
> Dot 4.
>>  I am sure I am not the first to do that so what is the prognosis? I can
>> syphon off what is in the master cylinder but by now all sorts of mixing
> action
>> has occurred.
>>
>> Marv
>
>
> Answers to your questions are available from many good sources. I would
> suggest a Google search.
>
> Personally, I like and have systems with DOT 5 fluid in them. Does what I
> want; fluid stays clear and does not attract moisture like DOT 3, 4 do.
>
> I understood a long time ago that adding DOT3, 4 to a DOT5 system derates
> the DOT5 fluid but is 'compatible'. But the mixture of DOT3,4 and 5 is not
> desirable at all and can lead to a system with  strange looking gunk in 
> it.
>
> If I had a system with DOT5 that had to be topped off with DOT3,4, in an
> emergency, I would draw out all fluid from the master cylinder as soon as
> possible and flush and refill the system with straight DOT5 fluid. Brake
> fluid only is best to flush the system with and definately not alcohol 
> (from
> my manuals anyway). Some hydraulic parts were never designed to work with
> alcohol (and NO brake part will live when contaminated with anything
> petroleum based).
>
> Warren Anderson
> Sedona,AZ
>
>
>
>
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>
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>
> 




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