We filled our tank 4 years ago and still have 40 % left, thanks to the central boiler. Just gotta cut and split wood before the snow flies.
xcr440, that's exactly correct. Not that it happens very often, but if you were to lose a full tank cause the regulator went bad, you would never make up that loss. I had it happen on a suppliers tank. Filled today and gone in the morning. Their loss, not mine. If it was my tank, my loss.