Gasoline prices went up overnight in PEI. The Island regulatory and Appeals Commission approved an increase of 5.0 cents per litre in the price of regular gasoline and 4.0 cents per litre in the price of premium gasoline. The price of furnace oil went down by 4.0 cents per litre, while there was no change in the price of diesel. Including taxes, pump prices for regular self-serve gasoline now in the range of 183.3 to 184.5 cents per litre. Diesel still costs you between 186.2 and 187.3 cents per litre. The maximum price for furnace oil is 130.2 cents per litre.