Originally Posted by VinceU
Atwood=Alum. Can pit and corrode if not maintained.
Suburban=Steel will corrode and waste out if not maintained.
Maintained means follow mfg instructions.
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Suburban describes its' tank as porcelain coated steel. That's pretty much like your glass lined home unit.
You could have some of that porcelain cracked off allowing the steel to rust but my money is on bad looking water. Flush everything out including removing the filter and flushing the tank by forcing water in the anode rod hole until it is all clear. Then see what next summer brings.
Yes, it's hard to get the water out of the tank. I park my coach on a sloped area by my storage unit, let gravity drain as much as I can and then a bunch of twisted paper towels to get out most of the residue. A small layer of water in the bottom of the tank won't expand enough to do harm. Also, leave the anode out over the winter.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101