Congrats Christopher. Nice job and resourcefulness like you're showing, it is a real asset when it comes to keeping older or for that matter all rigs on the road.
I will say that old rigs are only slightly more likely to have a water heater fail than a 26 year old tank fail. Old-Biscuit is right about that part there is no time frame. If your water heater does leak, you will most likely notice it very soon after it starts. The way the one in our Bounder was mounted, it was contained in a small area with a drain hole directly below the tank.
Well enjoy your Winnie and your kids will remember your trips forever and yes they will bring up things from time to time that really impressed them, ours are in their mid-fifties and still talk about camp as kids.
