The burning question would be "Why?" The main advantage to synthetic oil is its extended change interval in new, tight-clearanced engines. That one will contaminate the oil with blowby and corrosive combustion gases in a very short time, so frequent changes would be very much in order. Also, I doubt if synthetic oil in a heavy enough weight to work properly in a wide-clearance engine like that one even exists. I would think a straight 30 weight oil would be indicated, and I've never seen a synthetic in that configuration.
Jerry

Last edited by Hotrod Lincoln; 12/23/2009 5:12 AM.
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