How can I tell if diesel fuel is ultra low sulphur or regular sulphur?
All on-highway diesel fuel sold in Canada is ultra low sulphur. Since dyed or marked off-road diesel fuel may be regular sulphur or ultra low sulphur, ask your local supplier about the sulphur content of its off-road diesel fuel. In Western Canada, all Petro-Canada diesel fuels sold for off-road use are normally ultra low sulphur.