I have 5w30 Quaker State Full Synthetic in my 05 Element w 214k have ran High Mileage oils in it before. It is due for an oil change this coming weekend, Pennzoil Platinum 0w40 or Quaker State Full Synthetic High Mileage 5w30 will be next. Next summer it will get Havoline Pro-DS Lifelong syn 10w30 or Pennzoil Platinum High Mileage 10w30 have both on the shelf. Any High Mileage oil will be fine either blend or synthetic. I run 5w30 or higher in my 5w20 spec oils just fine.