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Bioheat is a blend of standard heating oil and soybean oil. Bioheat is a fully renewable fuel made from domestically produced soybean oil that can be replaced each growing season.ioheat is a fully renewable fuel made from domestically produced soybean oil that can be replaced each growing season.
A biofuel is a gas, liquid, or solid from natural sources such as plants that is used as a fuel. Biofuels can be mixed with conventional fuels. COBUILD Advanced English Dictionary.