which is more harmful fuel Share with your friends Share 0 Rajdeep Nagi answered this diesal 1 View Full Answer Kushaan Rawat answered this Diseal fumes is more harmfull fuel 1 Purvajaa B answered this I think that it is POLCYCLIC AROMATIC HYDROCARBONS (PAH) 0 Ganesh.j answered this un pure crude oil is a harmful fuel 1 Ujjwal Raj answered this Methane 0