http://waterheatertimer.org/Replace-anode-rod.html and have some good anode info.
You could hacksaw through your old anode to see if you see shiny aluminum or a duller compound around the steel core.
I expect that your anode will help get more life out of the old tank. I suspect that doing the swap 5 years earlier might have been worthwhile. The cross-section cut might tell I think.
You could hacksaw through your old anode to see if you see shiny aluminum or a duller compound around the steel core.
I expect that your anode will help get more life out of the old tank. I suspect that doing the swap 5 years earlier might have been worthwhile. The cross-section cut might tell I think.