Home heat option / cost? I have an grease forced air furnace which is 25yrs elderly so...

I have an grease forced air furnace which is 25yrs elderly so I have to look at replacing it soon. How does the price of personality gas vs oil compare. (heating cost not the price of the furnace)
The ceiling contained by my house?
Answers:    fluent gas will be cheaper, but probably not by much
Electricity go out contained by with the sole...
Gas vs. Oil..... GAS is like give or take a few 3$ a lb in the state of VA compared to 3.50 Oil a gal... but grease is better last longer than gas grease 200 gal will prob be all you would have need of this winter the way the atmosphere temp is going now. Gas is more expesive even though it is cheaper than grease bc gas is a more rare resource and does not second as long as oil