Choose from 10W-30 or 10W-40 viscosities. You can also choose from High Mileage ... conventional engine oils. Formula Shell's conventional motor oil is available in 5W-20, 10W-30, 10W-40, and ...

It's why most high-mileage motor oils (like Castrol EDGE High Mileage 5W-30 or Pennzoil Platinum High Mileage 5W-30) claim to ...