ibkevin

Sorry I don't have a before shot, but she had "a good tan".

I noticed the rust colored goo inside was still soft so I did a bleach "agitation", because of the baffles inside you have to find the right angles to slosh. Chemical alone won't get the growth, it needs the mechanical agitation.

After soaking in bleach overnight another adgitation and rinsed a couple of times. Next I did a series of soakings and adgitations with rust and lime remover. In the pic I'm concentrating on the forward nose of the tank, sure, call it vanity.

Now you're saying, Kev, why not just get a new one? A new one will start a Jones's effect, next the washer pump will get $hitty because she did'nt get a new tank, and I really don't want to **** off Mr. Brake Booster. He's really hard to deal with!

Rob in Oz

Kevin

Looks like it's working OK - the plastic itself doesn't look too yellow - but I don't think it's bleach you're using, if that's the container in your pic. Lime and rust stain removers are usually hydrochloric or phosphoric acid - so take care with skin contact, not to mention metal bits of your Porsche.

Rob

ibkevin

I started with bleach for the hell of it, I knew it wouldn't change anything more than the interior surface. The tank is off an 88', I think. She'll get many good rinses before she's back in the system.

As far as skin contact, these are California products, which means lab rats have been body building with the stuff for a couple of decades. Even my suple office hands scoffed at it.

Granite 944

Wish ya luck Kevin! If you really get that white again, you'll definately be the first ever! I know I gave up on it.

ibkevin

Thank's Ken

Since last post she looks way better, I'll post a pic when she's done. As long as all the fluid coming out looks like tea, it's good. I know lot's of lister's have been trying to find an effective cleaning method, hope this helps.

KuHL 951

I can usually get the deposits and all interior staining out with OxyClean, water, and some very coarse sand or fine gravel. Seal the outlets with gray tape and turn it flat but upside down, shake it around like you're panning for gold and it will loosen up most of the crud. Keep turning it over to find stains until it looks good. Rinse very well and you're good to go. It won't make it perfect white again but you can at least see the coolant level.

ibkevin

Coarse sand.........Brilliant!

nineeagles

I admit that I went the route of buying a new one....expensive for just a baffled plastic tank but it made a great improvement in the engine bay .....no matter how good you can get the engine bay to look it still looked dirty with the old yellow tank.....so I bit the bullet and bought the new one....I think from Performance Products....I have seen them a little cheaper elsewhere but can't remember which supplier now....it's been a while.....

ibkevin

I think the tank's plastic is pretty white so whatever color is left over will give her that "period" (as in time, gawd) look!

testarossa_td

Just paint it silver or black and mask off a little window so you can check the level

Porsche-O-Phile

Now THAT is a fantastic idea. I think that's going to happen in the very near future.

Yes I know there are aluminum ones, but $500 or whatever for a coolant reservoir? Please. Get real.

What testarossa is proposing looks fantastic and could easily be done in an afternoon. Only thing is you'll need a paint that (1) is high-heat resistant, (2) chemical resistant and (3) adheres well to plastic.

testarossa_td

I have seen it done in silver...looked good. They also put one of those Mobil stickers with the 993 part number on it...looked pretty slick. and the Porsche® script...well that is a dime a dozen on ebay. or you could put turbo on it..or..



of course black will retain more heat...

75ohm

Holy Crap!

ibkevin

^^^^^^^^^^^ What he said! Sweet idea, would a silk screen process take care of this? But then again, the sides would have to be coated and leave the bottom translucent to be able to see the liquid. I think the heat retention is more in the nature of the plastic than the color.

Wow Tes, what else ya' got up yer sleeve?

Imo000

Nice concept, but why mask off the window on the top, when the coolant level needs to be read from the side?