>>Why is it going to absorb more water standing still 24 hours a day
>>instead of standing still 23 hours a day and being driven for an hour a
>>day?
> I change my brake fluid yearly. I think that's a sensible precaution. This
> car hasn't had a change for at least ~2 years...
> Only once have I boiled brake fluid, in a mate's Fiat X1-9, down a big hill.
> Luckily it handled well enough to make a very fast right hander into a side
> street or I would have been in the poo. Since then I change my brake fluid.
Yes, sound advice for us all, not just those storing cars, and a nice
cautionary tale, but you don't seem to have actually answered the question.
Patrick Young - 29 Apr 2004 12:01 GMT
>>> Why is it going to absorb more water standing still 24 hours a day
>>> instead of standing still 23 hours a day and being driven for an hour a
>>> day?
>> I change my brake fluid yearly. I think that's a sensible precaution.
>> This
> Yes, sound advice for us all, not just those storing cars, and a nice
> cautionary tale, but you don't seem to have actually answered the question.
Guessing here ... brake fluid being hydroscopic(hygroscopic) would like
to absorb water though dried out and cracked piston seals due to their
lack of use? (sort of on and off topic re: diesel engine fuel injection
pumps where they would leak when the low sulphur diesel was introduced
due to lack of aromatics they had been used to before).
I change fluid every 12 months and notice the drained fluid looks
pretty crap down around where the braking action happens. I also
wipe a little grease in the (hollow) piston where it contacts the
anti-squeal shim as surface rust forms in there.
OzOne - 29 Apr 2004 22:32 GMT
>Guessing here ... brake fluid being hydroscopic(hygroscopic) would like
>to absorb water though dried out and cracked piston seals due to their
[quoted text clipped - 6 lines]
>wipe a little grease in the (hollow) piston where it contacts the
>anti-squeal shim as surface rust forms in there.
You're a brave man putting grease anywhere near piston seals and
brakes. Hope it mega ultra super HT grease so it doesn't melt out.
Oz1...of the 3 twins.
I welcome you to crackerbox palace,We've been expecting you.
Patrick Young - 30 Apr 2004 12:58 GMT
>>I change fluid every 12 months and notice the drained fluid looks
>>pretty crap down around where the braking action happens. I also
[quoted text clipped - 3 lines]
> You're a brave man putting grease anywhere near piston seals and
> brakes. Hope it mega ultra super HT grease so it doesn't melt out.
Nope - 4wd Hilux. The brakes don't really get that hot and I didn't
say pack it in. Just a little coating for protection. Actually I
don't see a problem either for any vehicle in this regard. These
parts get wet when/if-ever-again it rains.
The service manual says to coat the anti squeal shims with it
anyway. There is the note to "Do not allow oil or grease to get
on the rubbing face".