Fuel oils n.e.c.

**Includes:** - fuel oil, - residual fuel oils, i.e. oils having a distillation range of 350ºC to 650ºC and a kinematic viscosity in the range 6 to 55 cSt at 100ºC - heavy fuel oil, i.e. a blended product based on the residues from various refinery processes - heavy gas oil, i.e. a mixture of predominantly gas oil and fuel oil which distils in the range of approximately 380ºC to 540ºC