The profit from making gasoline may more than double in the New York region through April as refinery maintenance cuts production and stockpiles. Repairs will peak in March with 1.8 million barrels a day offline, equal to 10 percent of U.S. capacity, according to data from Energy Aspects Ltd. and CIBC World Markets Inc. That will help boost margins to $9 a barrel in April, from $3.30 this month, says Wood Mackenzie Ltd., an energy consultant. Suncor Energy Inc. (SU) should benefit as it keeps plants operating through the spring. Most of the work will happen just as suppliers prepare to stock up on higher-quality fuel before the summer driving season. Gasoline demand averaged 454,600 barrels a day, or 5.3 percent, more in April than in January over the past five years. Retail prices may reach $3.75 a gallon this spring, from $3.307 on Feb. 10, according to AAA. […]