I believe the yellowing on this Marx loco is from tobacco smoke because the silver trucks as well as the formerly white printing are affected. Dish detergent didn't touch it and Soft Scrub fixed the "cat whiskers" nicely, but was too aggressive for the lettering. Any tips on what I could use on the grills? I'm no chemist, so don't know what might be a solvent for all the different compounds in the smoke. Any ideas thoroughly appreciated.
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Try glycerine. Leave the glycerine on for about a half an hour and then wipe with a mild soapy water and rinse.
Norm
>Simple green,< will cause the stuff to run right down, usually have to do it twice, or even thrice the gum resin, is built up in layers, especially if it involves time, and has built up enough 1 time will not remove it all,
IMHO, Simple Green is also likely to remove that rubber stamped lettering.
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