All residual (heavy) fuel oils (including those obtained by blending). Kinematic viscosity is above 10 cSt at 80 oC. The flash point is always above 50 oC and density is always more than 0,90 kg/l.

• Regulation (EC) No 1099/2008 of the European Parliament and of the Council of 22 October 2008 on energy statistics
  Place of publication: (Dz. Urz. UE L 304 z 14.11.2008, str. 1, z późn. zm.)