I am so confused about how often to change the oil and filter on my 2009 Hyundai Sonata. It is a V6 and I am getting so many different answers to this question that I don’t know which one to believe. Even the car dealerships don’t agree on the right interval. The manual says under normal conditions, whatever that is, that the recommended mileage/time interval is 7500 miles or 6 months. The dealer says I should do it at 5000 miles or 6 months and then there is the old school theory of every 3000 miles or 3 months. I do use Quaker State Synthetic Blend oil. I only put about 4000 miles every six months and have been tempted just to change my motor oil once a year since I use a synthetic blend and have such low mileage. Is the time interval that crucial? Even though I have only 14000 miles on the car in 2 entire years, it seems a waste to change my oil even at 6 months. It looks like new…meaning the color is the same as when it was changed…the light honey color.
Please help me with this confusion. I would like to know both the mileage and time interval recommendations using a synthetic blend motor oil. Thanks!