Honda Car Forum

On Thu, 9 Sep 2004 11:02:31 -0400, "Richard" <rfeirste at nycap.rr.com> wrote:

||
||The slime is the result of water mixing with the fluid. This is "normal".

I didn't catch the first part of this thread, but when you mix silicone brake
fluid wiht glycol fluid, you get a grey slime. I generally see it in systems
that have been drained, but not flushed, then DOT 5 silicone added. The silicone
reacts with the glycol.
Personally, I don't understand this since silicone is about as inert a
substance as exists in the universe.
Texas Parts Guy

Steve Bigelow wrote:
>
> "Grumpy au Contraire" <Grumpy@doofis.FAKEcom> wrote in message
> news:41408C29.C4E02CBD@doofis.FAKEcom...
> >
> >
> > Richard wrote:
> >>
> >> The slime is the result of water mixing with the fluid. This is "normal".
> >> Why the industry still uses a fluid that attracts water is beyond me.
> >> NATO
> >> and the airlines have switced to alternative fluids many years ago; as
> >> have
> >> a few car venders.
> >>
> >> Richard.
> >
> >
> > The biggest risk of using synthetic, (silicone), brake fluids is leakage
> > into the engine via a defective master cylinder/brake booster. Silicone
> > will quickly convert back to its roots, sandy like grit that will
> > quickly ruin an engine.
>
> I would think silicon would do that, not silicone.


Yer prolly right. I have Pamela Anderson on my mind...


--
JT

Just tooling through cyberspace in my ancient G4

On Thu, 09 Sep 2004 16:57:44 GMT, Grumpy au Contraire <Grumpy@doofis.FAKEcom>
wrote:

||
||
||Richard wrote:
||>
||> The slime is the result of water mixing with the fluid. This is "normal".
||> Why the industry still uses a fluid that attracts water is beyond me. NATO
||> and the airlines have switced to alternative fluids many years ago; as have
||> a few car venders.
||>
||> Richard.
||
||
||The biggest risk of using synthetic, (silicone), brake fluids is leakage
||into the engine via a defective master cylinder/brake booster. Silicone
||will quickly convert back to its roots, sandy like grit that will
||quickly ruin an engine.

I have never known brake fluid to get into an engine from a defective master
cylinder or booster. It would have to be leeking fast out the back of the MC,
and the booster would take a great deal of fluid - more than the brake system
holds - to reach the check valve leading to the hose to the manifold.
Texas Parts Guy

Rex B wrote:
>
> On Thu, 09 Sep 2004 16:57:44 GMT, Grumpy au Contraire <Grumpy@doofis.FAKEcom>
> wrote:
>
> ||
> ||
> ||Richard wrote:
> ||>
> ||> The slime is the result of water mixing with the fluid. This is "normal".
> ||> Why the industry still uses a fluid that attracts water is beyond me. NATO
> ||> and the airlines have switced to alternative fluids many years ago; as have
> ||> a few car venders.
> ||>
> ||> Richard.
> ||
> ||
> ||The biggest risk of using synthetic, (silicone), brake fluids is leakage
> ||into the engine via a defective master cylinder/brake booster. Silicone
> ||will quickly convert back to its roots, sandy like grit that will
> ||quickly ruin an engine.
>
> I have never known brake fluid to get into an engine from a defective master
> cylinder or booster. It would have to be leeking fast out the back of the MC,
> and the booster would take a great deal of fluid - more than the brake system
> holds - to reach the check valve leading to the hose to the manifold.
> Texas Parts Guy



I know of at least three engines ruined by leaky master
cylinders/boosters and this was in Texas.


--
JT

(Austin, TX - Home of the Weird...)

On Thu, 09 Sep 2004 23:39:01 GMT, Grumpy au Contraire <Grumpy@doofis.FAKEcom>
wrote:

||I know of at least three engines ruined by leaky master
||cylinders/boosters and this was in Texas.
||
||
||--
||JT
||
||(Austin, TX - Home of the Weird...)

Interesting. Good to be aware of.


Texas Parts Guy

Rex B wrote:
>
> On Thu, 09 Sep 2004 23:39:01 GMT, Grumpy au Contraire <Grumpy@doofis.FAKEcom>
> wrote:
>
> ||I know of at least three engines ruined by leaky master
> ||cylinders/boosters and this was in Texas.
> ||
> ||
> ||--
> ||JT
> ||
> ||(Austin, TX - Home of the Weird...)
>
> Interesting. Good to be aware of.
>
> Texas Parts Guy


I noticed in a later post that the poster indicated that it was DOT-4
synthetic... I have no idea what that stuff is make up from. DOT-5 is
the silicone stuff.

So the ball's up in the air again...


--
JT

Just tooling through cyberspace in my ancient G4

On Fri, 10 Sep 2004 17:16:18 GMT, Grumpy au Contraire <Grumpy@doofis.FAKEcom>
wrote:

||I noticed in a later post that the poster indicated that it was DOT-4
||synthetic... I have no idea what that stuff is make up from. DOT-5 is
||the silicone stuff.

I thought that too, at first, reading "Synthetic" and thining "Silicone/DOT 5".
But it's two different cats.

Synthetic brake fluid is no different from synthetic oil, just a highly refined
version of the regular stuff, ethylene glycol.

Silicone brake fluid is an entirely different chemical.
Texas Parts Guy