Originally Posted by bluesubie
Mobil1 makes several good, robust oils. 0W-40, Turbo Diesel Truck 5W-40 (thicker than RT6 at all temps), and High Mileage 10W-30 and 10W-40. Subaru of America recommends synthetic in all turbos.
Mobil does make good oil but when I used Mobil 1 high mileage 10w-30 my car burned through like 4 quarts of oil within 3500 miles.