Nope. Winter gas is diluted with butane. Butane is a massive rip off. First, it contains less BTU than gas, so we get less energy. Butane is plentiful and waaaay cheaper than gas, so the oil companies save a lot of money. The kicker is that butane boils at -1C. Filling your car at 3C? The butane is boiling off and being released in a gaseous state to the atmosphere. You're not even getting the crap you paid for!
Cars with fuel injection don't need butane for starting in the winter. Winter gas is a giant rip-off.