Well, relatively, anyway. 2008 1.6L four-banger Hyundai 5-Speed, this OCI has about 6K out of 7K on PP 5W20 at Interstate speeds, 65-80 or 85. RPMs run at a steady 80ish around 4000-4400. Gold Purolator filter. Not using a drop, the oil is darker than new, not black. Is this severe service, hard on the oil, or am I not even making a dent in the ad-pack? These are trips north and south I-95, Florida to No. Va., back and forth to New England, fill the car, point it north or south, drive the gas out of it, fill it up, do it all over again. My feeling is, this usage is fine for 10,000 miles, but then I consider the RPM and wonder..