I've got a new Corolla with the free maintenance program, I was told the oil change interval is 1 year/10,000 miles with 0W-20 synthetic oil. Do you think I should wait that long? The owner's manaual has service schedules of every 6 months/5,000 miles, every service gets the tire rotations and fluid checks (and the floor mat placement check) but the oil only gets changed every other service if 0W-20 is used. I would think Toyota would know what they are doing but 10,000 miles on the factory fill makes me nervous. Any thoughts? Thanks.