I have a 2003 Grand Am. 4 cycl 2.2 Echotech. 104,000 miles. I have always used Mobil 1 5w-30 EP and was wondering if I should change to a High Mileage oil. The engine has no leaks and does not use oil.
No I would not change to the HM oil. Since you have been using M1 oil all along your engine will be very clean. Keep using the EP and your engine will out last the body of the car.
What is your OCI? Curious.
well I go by the bottle, 15,000 miles. I drive over 40 miles to work each way.
By the way welcome to BITOG. Since you are doing 15,000 mile OCIs how about keeping us informed as to how the Pontiac is doing. 400 miles to and from work each week, so it won't take long to build miles up.