Ok firstly, sometimes people call this "Biodeisel" but ignore that - they mean the same thing. When refering to heating oil, biofuel is the correct terminology. The term biofuel refers to a mix of heating oil (no 2 no 4 or 6) and virgin soybean oil.

1) Legislation has just gone in for a new 4 year tax rebate if your building starts using this fuel. It has two huge advantages, it is much much cleaner on your boiler and related machinery. It also cuts your emissions of sulpher, carbon and is better for eveyone with ashtma, etc as well as the environment (reduces foreign oil dependency).

2) Because of the tax rebate, it will not cost you anything additional to use and may even save you money. It is a win-win path to take.

3) You should call Metro Fuel Oil Corp. (the front-leader in supplying the NYC area and providers of the freshest mix: 718-383-1400) and they will give you a price comparison between what you are paying now and what you would be paying using the biofuel and applying with the rebate.

Hope this is useful.