The problem is that their rapid expansion has not been in tandem with quality control. All station are run by dealers who collect the fuel from vivo depots, however some are greedy and they end up contaminating the fuel before it gets to the station. Oilibya and Total have a dedicated transport contractors i.e. Roy hauliers and transmoters who are required to fit their delivery trucks with GPS for tracking from the time it departs to arrival at assigned location. Too bad for shell. Kobil and National is a NO! Wakora kuruka.