Biosolar is a type of fuel that used for "ignition compression" engines (in diesel engines which are compressed in the air steps. The compressed air produces high pressure and heat can be used solar which is sprayed by the injector) whose fuel quality is demanded by using Cetan (Cetane's number). The higher the Cetane's number shows the more flammable diesel oil, and vice versa.
Biosolar users in general are for fuel in all types of high-speed diesel engines (above 1000 RPM), which can also be used as fuel for direct combustion in small kitchens, which are needed for clean sales. This type of diesel is also called Gas Oil, Automotive Diesel Oil or High Diesel Spees.