Oil Heating - What to do?

[Krista Volpe]

Hi!  I'm considering a two family property that uses oil for heating/hot water.  There is currently one furnace and the current owner includes all utilities in rent.  Since oil is such a variable, and could add hundreds of dollars per month based on tenant usage to expenses, what is the best way to go about this?  I'd prefer to have tenants pays for the oil separately but having a hard time figuring out what the base rents should be excluding the oil/electric and if that will alienate a large population of tenants due to the variability.  

Thanks in advance for any advice!