[Healeys] Silicone DOT5 brakefluid for the 100

[Chris Dimmock]

I still use Dot 4. Changed every year or so.
For all the pedal issues/ have to change everything/ flush everything  
issues we have all heard for years - I never changed.
Just mentioned this to a good mate who has been racing sprites for  
over 30 years, and who runs a very successful business rebuilding/  
maintaining spridgets, and he said 'huh- been running dot 5 in race  
cars for over 10 years'
I'll probably go dot 5 next month when I rebuild the whole hydraulic  
system in my BJ8
So is it 5 or 5.1?
Already have rebuilt calipers/ 3 new hoses/ rebuilt bj8 booster/  
clutch& brake master cyl kits for my s/s sleeved master cyls & clutch  
s/cyl and nos rear wheels cyls.
Comments?
Chris
www.myaustinhealey.com

Sent from my iPhone

On 10/11/2009, at 2:04 PM, Tom Felts <tomfelts at windstream.net> wrote:

> Don't suppose they said why?  Are we to assume why?
>
>
> ---- David Nock <healeydoc at sbcglobal.net> wrote:
>
> =============
> This comes up about every 6 months or so and all I will say is that
> if you purchase a Girling cylinder or kit in the instructions it
> clearly states that if you use Silicone fluid your warranty is VOID.
>
>
> On Nov 9, 2009, at 3:06 PM, Eric (Rick) Wilkins wrote:
>
>> Silicone is known to be more compressible than DOT 4. That's one of
>> the reasons that it is not used or recommended in ABS systems.
>>
>> The fact that it doesn't absorb moisture is bad because instead of
>> suspending moisture, it can cause water to "settle" in brake parts
>> leading to water pockets and/or corrosion from same.
>>
>> Wilko
>>
>> On Nov 9, 2009, at 1:52 PM, Tom Felts wrote:
>>
>>> less water absorption is a negative???
>>>
>>> And----my pedals are in no way spongy.  Sorry to defend DOT 5 so
>>> strongly, but seems everything I hear bad about it has not
>>> happened to me in a very long time of silicone use.
>>>
>>>
>>> ---- Oudesluys <coudesluijs at chello.nl> wrote:
>>>
>>> =============
>>> Although DOT5 has its advantages in:
>>>
>>> -not stripping paint like DOT3/4 (I do not know if this also true  
>>> for
>>> DOT5.1)
>>> -less detoriation being not or less hygroscopic
>>> -higher dry and wet boiling point
>>> -long life