Gas prices could drop by as much as 21 cents per litre in Metro Vancouver by Wednesday, according to one industry analyst.

After a roughly three cent increase Thursday, Ontario gas prices are expected to rise about five cents on Friday and climb again over the next two weeks.

It is historically one of the most expensive weekends at the pumps and heading into Victoria Day long weekend the Canadian Taxpayers Federation (CTF) is calling on the federal government to remove the federal excise tax on gasoline.