Splitting Oil-Powered Hot Water Radiator?

[David A.]

I just had an accepted offer on a 3-story 2-family house in Connecticut (2br first floor, 3-4br flex on the second/third floors) and in checking out the basement, all utilities were split besides heat, which is powered by oil and has hot water radiators on each floor. Is there any way to meter this seperately? I feel like that'd be a huge PITA given that oil isn't on-demand but delivered to fill the tank, so I'm guessing figuring out the average monthly cost and building that into the rent is best, but this is my first rental property and I'm terrified a tenant will take advantage of that and run the heat high all winter. Potentially considering converting to seperately-metered natural gas if it's at all possible, but struggling to find more info online about that, and not sure it'd be worth the initial install cost over the next couple years (for me, anyways). Would love to hear how others have dealt with this before! It's a solid B+ property in a C neighborhood, DS unit roughly 850/mo, US one 1200/mo.