The price of gasoline has taken a major drop overnight. The province's Utility and Review Board used its so-called interrupter clause to make the change. Gasoline is down today 5.5 cents. A litre of regular gas along the South Shore is now selling for $1.25.5. High-test is down a little as well. Diesel is unchanged though at $1.39.3 per litre. The interrupter clause is used when there's a sudden market shift. It was last used on September 20th, when the price fell six cents overnight. The biggest change today in gas prices is in Prince Edward Island. The price of gas on the island tumbled more than seven cents overnight. Drivers there are paying about $1.21 for a litre of regular gas today.