OIL Marketing Companies Association of Zambia president Dr Kafula Mubanga says the current shortage of petrol is due to the fact that most OMCs are now preferring to transport diesel. And Energy Regulation Board (ERB) Public Relations Manager Namukolo Kasumpa says ERB is undertaking routine fuel stocks in order to ensure that there is a reliable and continuous fuel supply chain in the country. In an interview, Wednesday, Mubanga said the cost of transporting diesel was much cheaper compared that of petrol. “The current erratic supply of fuel is arising from a particular product which is in this case petrol. Our observation is that this is resonating that there has been bigger margins for OMCs because the cost of transport...