Petroleum derivates\' prices went down Wednesday by LL700 for gasoline 20 liters (98 & 95 octane) and red diesel, LL600 for green diesel and Kerosene and LL500 for Gas cylinder. Water and Energy Minister Gibran Bassil issued a decision to set the ceiling price for petroleum derivatives in Lebanese markets. Oil prices shall continue their downhill slide during upcoming week if the worldwide crude oil prices continue to drop.