Fibreglass problem
 

A couple years after painting this car in the late 90's, blisters
started to appear on the DS fender. The problem got so bad that the car
was sidelined until recently, when it was decided to try and remedy the
paint problem.
After the shop stripped the paint, and wiped it down, a stain
started to appear where the blisters were. It was determined that this
stain is silicone brake fluid wicking it's way into the fender.

The area in question has been treated with Prep-sol, to no avail.
The next level was an aircraft quality silicone remover, which does ok
on the surface, but the stains bleed back up after a couple hours.
There is also another product, we used, that is supposed to penetrate,
combine with and remove silicone, but it appears to have 'energized' the
stuff and now, it's spreading further.

The origin was obviously the master cylinder and the fluid has wicked
it's way around to the front of the car now
Anyone have any suggestions as to what approach to take on removing
this stuff from the panels, so it can be painted. Is there anything you
can use over it to seal it in?

Replacement of the panels isn't an option.

Any advice wiould be greatly appreciated... Mine is "never use silicone
brake fluid"

thanks
BobJ
Great Falls, VA

Fibreglass problem
 

use a two part epoxy primer.
SilverStude wrote:
> A couple years after painting this car in the late 90's, blisters
> started to appear on the DS fender. The problem got so bad that the car
> was sidelined until recently, when it was decided to try and remedy the
> paint problem.
> After the shop stripped the paint, and wiped it down, a stain
> started to appear where the blisters were. It was determined that this
> stain is silicone brake fluid wicking it's way into the fender.
>
> The area in question has been treated with Prep-sol, to no avail.
> The next level was an aircraft quality silicone remover, which does ok
> on the surface, but the stains bleed back up after a couple hours.
> There is also another product, we used, that is supposed to penetrate,
> combine with and remove silicone, but it appears to have 'energized' the
> stuff and now, it's spreading further.
>
> The origin was obviously the master cylinder and the fluid has wicked
> it's way around to the front of the car now
> Anyone have any suggestions as to what approach to take on removing
> this stuff from the panels, so it can be painted. Is there anything you
> can use over it to seal it in?
>
> Replacement of the panels isn't an option.
>
> Any advice wiould be greatly appreciated... Mine is "never use silicone
> brake fluid"
>
> thanks
> BobJ
> Great Falls, VA

Fibreglass problem
 

"SilverStude" > wrote in message
news:G6GGg.93749$LF4.28204@dukeread05...
> A couple years after painting this car in the late 90's, blisters started to
> appear on the DS fender. The problem got so bad that the car was sidelined
> until recently, when it was decided to try and remedy the paint problem.
> After the shop stripped the paint, and wiped it down, a stain started to
> appear where the blisters were. It was determined that this stain is silicone
> brake fluid wicking it's way into the fender.
>
> The area in question has been treated with Prep-sol, to no avail. The next
> level was an aircraft quality silicone remover, which does ok on the surface,
> but the stains bleed back up after a couple hours. There is also another
> product, we used, that is supposed to penetrate, combine with and remove
> silicone, but it appears to have 'energized' the stuff and now, it's spreading
> further.
>
> The origin was obviously the master cylinder and the fluid has wicked it's
> way around to the front of the car now
> Anyone have any suggestions as to what approach to take on removing this
> stuff from the panels, so it can be painted. Is there anything you can use
> over it to seal it in?
>
> Replacement of the panels isn't an option.
>
> Any advice wiould be greatly appreciated... Mine is "never use silicone brake
> fluid"
>
> thanks
> BobJ
> Great Falls, VA

Interesting problem caused by a poor substitute for brake fluid.

Use your silicone remover as a wash inside and out and with a high powered shop
vacuum suck it on through the panel and bake for 4 hours. Repeat until you no
longer see the stain. Then do it again with slow lacquer thinner and then
re-sand with 36 grit and wash and vacuum again, then bake again. Now re-resin
(epoxy) the entire panel, reshape with 36 grit and re-resin again. Rough it up
with 180 grit and bake then apply a self etching primer and finish as normal.

--
Dad
05 C6 Silver/Red 6spd Z51
72 Shark Black/Black/4spd

Fibreglass problem
 

There is No solution to your problem..once you get that silicone brake fluid
on fiberglass it's all over... Silicon fluid has ruined hundreds of paint
jobs and much fiberglass...cost to car owners has been in the thousands..and
yet people continue to use it ..why...????

Fibreglass problem
 

It will always come back..there is no solution except to replace the
panels....been there done that...!!!!!!!!!!!!!!

Fibreglass problem
 

robrjt wrote:
> use a two part epoxy primer.
> SilverStude wrote:
>> A couple years after painting this car in the late 90's, blisters
>> started to appear on the DS fender. The problem got so bad that the car
>> was sidelined until recently, when it was decided to try and remedy the
>> paint problem.
>> After the shop stripped the paint, and wiped it down, a stain
>> started to appear where the blisters were. It was determined that this
>> stain is silicone brake fluid wicking it's way into the fender.
>>
>> The area in question has been treated with Prep-sol, to no avail.
>> The next level was an aircraft quality silicone remover, which does ok
>> on the surface, but the stains bleed back up after a couple hours.
>> There is also another product, we used, that is supposed to penetrate,
>> combine with and remove silicone, but it appears to have 'energized' the
>> stuff and now, it's spreading further.
>>
>> The origin was obviously the master cylinder and the fluid has wicked
>> it's way around to the front of the car now
>> Anyone have any suggestions as to what approach to take on removing
>> this stuff from the panels, so it can be painted. Is there anything you
>> can use over it to seal it in?
>>
>> Replacement of the panels isn't an option.
>>
>> Any advice wiould be greatly appreciated... Mine is "never use silicone
>> brake fluid"
>>
>> thanks
>> BobJ
>> Great Falls, VA
>

that's our next approach, thanks

Fibreglass problem
 

Dad wrote:
> "SilverStude" > wrote in message
> news:G6GGg.93749$LF4.28204@dukeread05...
>> A couple years after painting this car in the late 90's, blisters started to
>> appear on the DS fender. The problem got so bad that the car was sidelined
>> until recently, when it was decided to try and remedy the paint problem.
>> After the shop stripped the paint, and wiped it down, a stain started to
>> appear where the blisters were. It was determined that this stain is silicone
>> brake fluid wicking it's way into the fender.
>>
>> The area in question has been treated with Prep-sol, to no avail. The next
>> level was an aircraft quality silicone remover, which does ok on the surface,
>> but the stains bleed back up after a couple hours. There is also another
>> product, we used, that is supposed to penetrate, combine with and remove
>> silicone, but it appears to have 'energized' the stuff and now, it's spreading
>> further.
>>
>> The origin was obviously the master cylinder and the fluid has wicked it's
>> way around to the front of the car now
>> Anyone have any suggestions as to what approach to take on removing this
>> stuff from the panels, so it can be painted. Is there anything you can use
>> over it to seal it in?
>>
>> Replacement of the panels isn't an option.
>>
>> Any advice wiould be greatly appreciated... Mine is "never use silicone brake
>> fluid"
>>
>> thanks
>> BobJ
>> Great Falls, VA
>
> Interesting problem caused by a poor substitute for brake fluid.
>
> Use your silicone remover as a wash inside and out and with a high powered shop
> vacuum suck it on through the panel and bake for 4 hours. Repeat until you no
> longer see the stain. Then do it again with slow lacquer thinner and then
> re-sand with 36 grit and wash and vacuum again, then bake again. Now re-resin
> (epoxy) the entire panel, reshape with 36 grit and re-resin again. Rough it up
> with 180 grit and bake then apply a self etching primer and finish as normal.
>

This sounds like what it needs. I'll see if the painter is up to
doing this... thanks

Fibreglass problem
 

Redbull wrote:
> There is No solution to your problem..once you get that silicone brake
> fluid on fiberglass it's all over... Silicon fluid has ruined hundreds
> of paint jobs and much fiberglass...cost to car owners has been in the
> thousands..and yet people continue to use it ..why...????

I hear you..

Fibreglass problem
 

"SilverStude" > wrote in message
news:vyJGg.93756$LF4.89673@dukeread05...
> Dad wrote:
Snip>
> This sounds like what it needs. I'll see if the painter is up to doing
> this... thanks

By the way this happened to a '66 black coupe that had the entire left side
wiped down with a rag that was used to clean up after a brake bleed with
silicone fluid. It took allot of work to correct that little misstep but the car
has never shown any paint separation and that was in 1991.

Don't let Redbull discourage you, he's on the negative side of earth.

Fibreglass problem
 

Redbull wrote:
> It will always come back..there is no solution except to replace the
> panels....been there done that...!!!!!!!!!!!!!!

It would be cost prohibitive to replace the panels... and I believe
if the silicone can get into the panel, there should be something that
can chase it and remove it. I, currently, have a product called Digesil,
used to remove silicone sealer in aircraft fuel tanks. It does good
where you can immerse the object, but we can't apply that technique to
the panel.
So far, we've kept a soaked rag against the panel and allow it to
sit a while. Once washed off, the panel will dry out, but a couple
hours later the stain reappears. Hopefully, it will get a lot of it
out, but there's a limit to this shop's patience.
Our next attempt will be to use "Eliminator" epoxy primer and try to
force dry it before the oil has a chance to wick back up.
I was told by an expert in FRP from Dow Corning, to seal it with
(long chemical name here) epoxy paint, then proceed with the normal
automotive finish process. Of course, he couldn't guarantee the result.
Thanks, everyone for your insight.

Fibreglass problem
 

This is very interesting, since the reason most old car people began to use
the DOT 5 silicone brake fluid was the safety of using it around car
finishes.

This is great (sarcasm), since I have a car with the fender down to factory
primer and had the master cylinder blow DOT 5 all over it while trying to
pressure bleed the MC.


"SilverStude" > wrote in message
news:G6GGg.93749$LF4.28204@dukeread05...
> A couple years after painting this car in the late 90's, blisters started
> to appear on the DS fender. The problem got so bad that the car was
> sidelined until recently, when it was decided to try and remedy the paint
> problem.
> After the shop stripped the paint, and wiped it down, a stain started
> to appear where the blisters were. It was determined that this stain is
> silicone brake fluid wicking it's way into the fender.
>
> The area in question has been treated with Prep-sol, to no avail. The
> next level was an aircraft quality silicone remover, which does ok on the
> surface, but the stains bleed back up after a couple hours. There is also
> another product, we used, that is supposed to penetrate, combine with and
> remove silicone, but it appears to have 'energized' the stuff and now,
> it's spreading further.
>
> The origin was obviously the master cylinder and the fluid has wicked
> it's way around to the front of the car now
> Anyone have any suggestions as to what approach to take on removing this
> stuff from the panels, so it can be painted. Is there anything you can
> use over it to seal it in?
>
> Replacement of the panels isn't an option.
>
> Any advice wiould be greatly appreciated... Mine is "never use silicone
> brake fluid"
>
> thanks
> BobJ
> Great Falls, VA

Fibreglass problem
 

"Tom in Missouri" > wrote in message
k.net...
> This is very interesting, since the reason most old car people began to use
> the DOT 5 silicone brake fluid was the safety of using it around car finishes.
>
> This is great (sarcasm), since I have a car with the fender down to factory
> primer and had the master cylinder blow DOT 5 all over it while trying to
> pressure bleed the MC.
>
This old car person never used it and anything that contains silicone is in
another building. Never thought of the coupe having had the fluid changed and
paid dearly for not paying attention.

As I said in the earlier post you need to eliminate as much of the silicone as
you can and then cover the effected area with a tough coating, epoxy resin
and/or self etching primer. Anything that can break surface tension as well as
silicone needs all the attention you can give it before you try to color coat.
On metal and fiberglass I still flash out the area with a torch as a start to
kill its affect on adhesion and then clean while still hot. On the '66 the paint
started breaking up just as I was finishing the first color coat and it had to
be washed down and prepped all over to even consider another color coat.

Fibreglass problem
 

Tom in Missouri wrote:
> This is very interesting, since the reason most old car people began to use
> the DOT 5 silicone brake fluid was the safety of using it around car
> finishes.
>
> This is great (sarcasm), since I have a car with the fender down to factory
> primer and had the master cylinder blow DOT 5 all over it while trying to
> pressure bleed the MC.
>
>
> "SilverStude" > wrote in message
> news:G6GGg.93749$LF4.28204@dukeread05...
>> A couple years after painting this car in the late 90's, blisters started
>> to appear on the DS fender. The problem got so bad that the car was
>> sidelined until recently, when it was decided to try and remedy the paint
>> problem.
>> After the shop stripped the paint, and wiped it down, a stain started
>> to appear where the blisters were. It was determined that this stain is
>> silicone brake fluid wicking it's way into the fender.
>>
>> The area in question has been treated with Prep-sol, to no avail. The
>> next level was an aircraft quality silicone remover, which does ok on the
>> surface, but the stains bleed back up after a couple hours. There is also
>> another product, we used, that is supposed to penetrate, combine with and
>> remove silicone, but it appears to have 'energized' the stuff and now,
>> it's spreading further.
>>
>> The origin was obviously the master cylinder and the fluid has wicked
>> it's way around to the front of the car now
>> Anyone have any suggestions as to what approach to take on removing this
>> stuff from the panels, so it can be painted. Is there anything you can
>> use over it to seal it in?
>>
>> Replacement of the panels isn't an option.
>>
>> Any advice wiould be greatly appreciated... Mine is "never use silicone
>> brake fluid"
>>
>> thanks
>> BobJ
>> Great Falls, VA
>
>
What's your email address?

Fibreglass problem
 

Normally, I never give it out. Too many spam bots pick them up and flood
the mailboxes. I've had a couple of addresses I've had to shut down as they
got several hundred spam a day. And on the public newsgroups, I've seen
people bombarded and harassed too much to give it out too casually.

What's up?

"SilverStude" > wrote in message
news:Iw5Hg.97391$LF4.47748@dukeread05...
>>
> What's your email address?

Fibreglass problem
 

"Tom in Missouri" > wrote in message
nk.net...
> Normally, I never give it out. Too many spam bots pick
> them up and flood the mailboxes. I've had a couple of
> addresses I've had to shut down as they got several
> hundred spam a day. And on the public newsgroups, I've
> seen people bombarded and harassed too much to give it out
> too casually.
>

I have a few of them free/disposable accounts just for this
reason.

g'day
--
"Key"
=====
---snip---