I did my first oil change at 3,548 km (2,218 miles). I know it is too early to do the oil change but I thought with winter on its way I will do it now. The oil drain plug access panel was easy to remove and the drain plug needs a 14 mm socket to remove it. The oil filter is part # 15208AA15A (Cdn $11.95) and the drain plug gasket part #803916010 (Cdn $1.49. Both are Subaru part #s. The drain plug gasket is a compression type of gasket so I wouldn't reuse the old one.The oil I used is Castrol Edge 0W20. I liked the ease of access to the oil filter.