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.