With the volatility in the markets, the Island Regulatory and Appeals Commission announced an unscheduled adjustment in gas prices. The prices of regular and premium gasoline decreased overnight by 5.0 cents per litre. The price of furnace oil went down by 4.0 cents per litre. The price of diesel decreased by 6.0 cents per litre. Including taxes, pump prices for regular self-serve gasoline now range from about $1.48 to $1.49 per litre. Diesel costs you $1.55 to $1.56 per litre. The maximum price for furnace oil is $1.19 per litre.