That's not rust,
That's staining from probably the hardest, most iron laden water on the planet it seems. The washer has it too all over the tub. I thought it might have been rust as well until I saw the water inlet is right above it.
P.S.
We have the original users manual, installation instructions and original receipt from Sears!! We even have the original blueprints from it's original installation in the kitchen.
OK everyone, here's the story. Our house was built in 1998 by a Connecticut Senator. He had this dishwasher installed as the house was being built. He was single and barely used it until 2005 when my partner, Dean bought the house. Dean used it once a week or less until I moved in in 2011. I let...