I am a road warrior with my 2005 Matrix XR w/5spd manual and 1.8L 1ZZ motor.
It currently has 106,000 miles. Ever since after the first oil change, I have been using Mobil 1 extended life oil (5w-30) and using the M1 extended life filter. I have been changing the oil every 10,000 miles. 90% of...