WARNING -DON'T DO THIS TO YOUR WASHER RESERVOIR!!!

I hear that alcohol is a good preservative ....

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The discoloration of washer bottles is usually on the inside. Clean the out side anyway you want but to bring back the original look means cleaning the inside.
I have had good luck with filling the bottle with muriatic acid for a short time. A bottle brush helps with the tougher areas. Followed by a thorough rinsing with COLD water.
I have not experienced any further deterioration of the plastic using this method.

Needless to say. percautions should be taken when dealing with acid.
 
One of mine spent 24 hours in Evapo-rust. Seemed to come out nice, I'm pretty sure it's mainly citric acid.
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The breakdown starts from within. Shielding it from external forces doesn't help.
I had a feeling that was the case. When I was big into restoring model cars, I quickly learned of how the styrene reacted to different paint, glue and just time. You could have a model body that looked fine, but every time you'd touch it, it would desinigrate

For the 70-73 C body I've heard rumours that a reproduction is in the works.

But until I get any updates I can't say as to when.

Nick
 
Rotocast! I like this idea! Thanks, Big John! We could remove all the factory nomenclature from the donor specimen and either leave it a smooth blank space or put our own nomenclature on it. Then we could possibly also alter the new product a little more by a 3rd resin application, to make the wall even thicker (towards the inside of the jug, which would marginally reduce its volume capacity....which is not an issue to be concerned with). I'm in. What's next?
 
If someone wanted to reproduce them, this would be the method. This would be similar to how they were made originally.

How To Rotocast Resin for Lightweight Displays

The machine to rotate/twist the mold could be built with a couple old washer motors and a little ingenuity.

hint @Zymurgy

I have watched this video a couple of times when this was brought up once before. It is a very interesting process. It seems like a finesse thing and could take some trial and error. Seems very doable and once it is figured out I could see some very happy people.

Sorry this is not the video I watched, the one I watched they did it by hand.
 
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Some quick poking around it seems there are places that will rotomold something for you. I wonder if it’s reasonably priced if you bring your own mold.
 
...or if you could just bring them the actual article to be cloned? If you have names and numbers, I'll volunteer to do the calling if you want.

Seems possible as well. One I found is Atlanta Rotomolding, (404) 328-1004. They had some sample items labeled ‘material hoppers’ which seem similar to a washer bottle. I’m going to guess this kind of business is common in many large markets.
 
Initial contact with Atlanta Rotomolding (404-328-1004); Thursday, Jan 3rd,2019 at 10:45ET. Spoke with Betty. She is going to brief their Production Manager on the question I am asking of them and someone will get back with me next week. They are a mass quantity producer, one customer is Walmart. They make Coolers for Walmart. I told her I'd be interested in only 25 to 50 units. Because they are a big time outfit, my sense is that they won't have the time or incentive to fool with washer bottles, not to mention trademark and patent issues (if there are any). -But we will see. Not Right.
 
I looked in my phonebook, white and yellow pages, under Prototype House. Nothing.:confused: ANYWAY, I just got off the phone with Mr. Rob Block, of Rotomold, Inc., Atlanta, Ga.. He said that the initial tooling estimate would range from $10K to $50K! He said that there had better be one heck of a market for these reservoirs. He said that is what we are going to run into with large companies. He said that we need to find a small-time rotomolder who is capable and willing to become involved with a limited production of this item. Someone who is working out of a small shop, with very low overhead and with a very low net revenue target (as compared to a large corporation). He said that having a donor reservoir for this small shop to use as its original will eliminate the need and cost of doing a 3D Printed Model. The casting can be made directly from the donor. He said that the knowledge of which specific formula of resin to use will be required. He said that the trademark/licensing should not be an issue if we remove the Mopar nomenclature. Mr. Block was very easy to talk with and most generous of his time. He told me to contact Quirey Design of Windber, Pa. and ask if they were interested or knew of somebody who might be. I have contacted Quirey Design and am now waiting for their reply. We all knew that this is how it would go. The thing "is" to keep on pushing. I wonder how much a used rotomold machine is? 1/4/19
 

Exactly... That's even simpler than I envisioned.

A old washer motor instead of the hand crank will get the job done and I would make the mold the same way @Zymurgy builds his tail light molds.

For a few washer bottles, you could fly under the radar of Fiat and leave the logo etc. in place.
 
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