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