I feared the potential liability of having an oil tank in the house. I read that if it leaks you are responsible for environmental cleanup both inside and outside and the cost would far out spend the cost of preemptively replacing the system so that's why I went ahead and got hat done immediately. Turns out I also needed a new roof, all new windows and doors and a new bath fitter immediately as well. 🤷‍♂️ Hopefully this house will give me a break soon!