Was told by a TOYOTA service center that their bulk oil is now GULF 5w-20 . Didn't say if it's a conventional or synthetic . Here's the P.D.S. for the conventional SN/GF-5 , http://124.30.44.229/GulfOilSearch/frmPrintForm.aspx?id=gulf-max-x_20110329173238.html&type=P and their synthetic SN/GF-5 , http://124.30.44.229/GulfOilSearch/frmPr...html&type=P . These are dated February 2011 . Here's their site for oils and other products . http://www.gulfoilltd.com/products_services/products_for_motorists1/index.html .
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