I don't see why not, but up in Mass., who knows? You house could use plus/minus one gallon per hour of use. Another problem is that when the tank runs empty, the filter gets all sludged up and needs replacement. Then you have to bleed the line to the burner and hopefully, it will light on the first shot.

Do you see why you should never let the oil tank run empty?

Call the fuel oil company and tell them you have an emergency situation. They may have a service guy come out with a 5 or 10 gallon container of fuel oil. You may have to pay for this service, but it is better than frozen pipes.

Filling the tank with Diesel fuel will work perfectly if the normal fill is #2 heating oil. Your furnace will be happy. Use K-1 if the Diesel is not available to you. The furnace will be OK with that.