I have Honda Odyssey and basically I use it as a backup car, so I don't drive much. I drove only 1,000 miles for the past one year since I changed oil, especially because I didn't use it to go to vacation due to check engine lights. In this case, how often should I change oil? Should I change oil at least once a year or can I continue to drive up to 3,000 miles or 6,000 miles? I used synthetic oil.