[Healeys] Silicone DOT5 brakefluid for the 100

[Oudesluys]

It is something that everyone should know. Ask producers and restorers. 
Google. I am sure that there are proper research results somewhere. I do 
not need them as I have seen it happen several times.
It may be that people who claim to have had no advers results have used 
DOT5.1 (a polyalcyleen glycol aether) and not DOT5 (a silicon fluid), 
two entirely different and incompatible fluids. DOT5.1 is compatible 
with DOT4 but has similar higher specs (dry and wet boiling points) as DOT5.
Kees Oudesluijs
NL

Richard Ewald schreef:
> Do you have any kind of authoritative cite for this claim, or is this 
> something that everyone just "knows"?  Inquiring minds want to know.
> I have never heard this before.
> Rick
>
> Sent from my iPhone
>
> On Nov 9, 2009, at 6:47, Oudesluys <coudesluijs at chello.nl> wrote:
>
>> Tom,
>> You should never fill up with DOT5 if you previously used DOT3 or 4. 
>> You run the very serious risk that the seals will perish and the 
>> system will leak like a sieve.
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