I've only seen anecdotal evidence of the so-called degradation of
existing rubber seals by changing to silicone fluids.
Many sources say there is no worry at all. Others say that external
parts like boot seals are susceptable to the silicone fluids.
Some sources even list the Dot 3-4 fluids as being "compatible" with
Dot 5 (silicone)
Go figure.
Wilko
On Nov 9, 2009, at 12:17 PM, Richard Ewald wrote:
> 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@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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