The recommended oil weight for my car is 5W30. I plan to keep this car for a longtime and won't be sellling it before 150K miles. I did a oil change at 3K miles with Redline 5W30. Planning to do another one before winter. I'm located in NYC so I do get my fair share of cold weather. If I don't really care about fuel consumption, by switching to a heaver oil like 10W30, will it be better for the engine ?