I have an oil fired boiler and am thinking of replacing it (25 years old) with a propane fired boiler. If I do this, I have about 450 gallons of oil remaining from the past season. What I am wondering is whether a new propane fired boiler can also use the remaining oil until it's gone and then switch to propane. Is there a different sort of jetting that can be done to switch from one to another or is this completely impossible.
thanks