How to Keep Your Heating Oil Tank in Good Shape
https://theheatingoiltankinsider.alderbrief.com/posts/how-to-keep-your-heating-oil-tank-in-good-shape
Regularly check your heating oil tank for rust, especially around the bottom and seams, as moisture can cause corrosion over time. Keep the tank full during summer to prevent condensation buildup, which leads to sludge in the fuel. Have a professional inspect the tank and filter annually, and consider adding a fuel additive to stabilize the oil. Always clear snow away from outdoor vents and fill pipes to avoid blockages.