I have washed numerous Garand receivers, greasy parts and stocks in my Kenmore Elite. Never any problems. Pots and pans setting,turbo zone and no heated dry cycle. 2 Cascade pods and good to go. After the machine has stopped I remove right away and towel of any damp spots. sandblast after cleaning and then into the parkerizing bath. Never have I encountered any rusting or other discolouration of the metal parts and most stocks get many of the minor scrapes and bruises removed/raised as well.

