Check out my thread http://www.cadillacforums.com/forum...ugh-2007/165860-just-changed-my-oil-3-6l.htmlOk, so now I know what to use when I do my first oil change. What is it 5 or 10W30?
That's interesting. I'm assuming that you were using the same grade and type for both oils? S2K isn't something I would put in a bracket racer. I would go with one of their racing oils. They don't make the S2K anymore.I used to use AMS Oil Series 2000 in my TBird bracket racer and would get the oil analyzed at the end of each season so I could keep track of engine wear. I then switched over to Royal Purple 2 seasons ago and again had my oil analyzed. The Royal Purple had about 30% less contaminates and dissolved metals than the AMS Oil. In all cases the same oil was run all season long and with both oils it would consume a quart or less. I run Mobil 1 5W30 in my CTS which consumes only a quart between changes.