I also run Castrol Edge 5W-30 and find it a very good oil for the price. I also experience the problem when filling up, I now just use measurements to fill up 4.4 liters.... Same here dude lol. I have 3 of the bottles sitting on the bench with the same amount of oil left over lol (yesterday I didn't use as much this time, oil filter again soon methinks as well). Motul, Royal Purple (free plug to xoom) and Castrol are what I'd get. I have NO clue why Toyota were using a heavier graded oil, and magnetec at that when servicing my car. Edge is more suited in terms of the Castrol family.