Heating Paranoia

I am just gonna throw this out there. I am completely terrified that our boiler will not last the winter. We got it "fixed" less than a month ago for a very hefty price and we refilled the oil tank. It has been working well since its surgery, but I am worried that it is sucking up the oil faster then we think. I was told by the heating guy that it burns a gallon of oil an hour.
Let's put that in perspective.
Our oil tank fits about 250 gallons of oil. That is 250 hours. That is just over 10 days of heat if we have the thing running constantly. Oh and a gallon of oil is about $3.50. That is just about $900 to fill the sucker up. If the winter is another 2 months (at a minimum) that is just about 60 days. SO that would mean 6 full refills of oil, or $900x6 or $5,400. And that doesn't even include the money we put into actually fixing the darn thing in the first place.
So basically, to avoid this horrible and expensive dilemma, we keep the thermostat on 64. On really cold days the system goes on and off quite a lot, but at least it isn't running constantly.

Now the scary part...

I went down to the oil tank yesterday and tapped on it, and I swear it sounded HOLLOW. Seriously I will CRY if we are already out of oil. If that is the case, we are in for a really cold winter. Oh yes, and the little gauge thingy to tell us how much oil is in the tank is totally busted. Those things happen after 90 years. And lucky for us, the company that made the tank probably went out of business 50 years ago. Wahhhh. That's me crying.

Needless to say, the system is getting TRASHED this summer.

Oh the joys of homeownership....

Brrrr....

Am I a crazy cat lady or what?!?!!?!