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I?m trying to clean up the windshield washer nozzles in my 68 convertible. The as-is finish appears to be a zinc coating and scraping a bit off the bottom side revealed copper. Is this correct for 1968? I have owned the car for over 40 years and have never touched them. If so, what is the best way to clean them up?
My 67 nozzles, when stripped, have a copper or brass nozzle with a metal bracket soldered to them.Here is a stripped vs a cad plated 67. Neither of these were good enough to use on my car.I suspect 68 nozzles may have the same metals underneath their finish. I will note that the outlet style (single vs twin) is different between the two years.
I think I just answered my own question. A quick Internet search indicated that phosphate and oil is only compatible with ferrous base metal. I may have to resort to paint.