Posted 2/18/2011 22:32 (#1622306 - in reply to #1621584) Subject: Re: New GM Vehicle Oil
central illinois
use Mobil 1 in cars and pick-ups. Change every 10000 miles never had a problem. The only valve cover I had off was on the 82 Mercedes-Benz diesel and that was to set the valves every 20000 miles. I traded it off with 325000 miles on it and it still had the orginal timing chain which ran the injection pump and overhead cam shaft.