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Well, no hole that I can see in frame anywhere. And where I would think valve might be where drain pipe comes through the enclosed belly, the spare tire bracket is bolted on. So, just looking in there is more of a project then I origonally thought. Former owners had to drain the tank somehow, hopefully the secret place will show itself by dealer contacting former owners or something. Maybe I'll call Keystone Monday. Tank is almost full so dealer must not have emptied it before we took ownership, they didn't realize three tanks, I guess, even thought they are Montana dealers, and they are a good dealer. Hope there was anti freeze in it over winter, enough not to damamge tank anyway. Obviously, still holding water.
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