Sierra 18-9400-4 25W-40 FC-W 4-Stroke Marine Stern Drive Oil - 5 Quart 25W-40 Premium Blend Formulated to provide excellent lubrication and corrosion protection Excellent low temperature operating properties Meets or exceeds quality performance API SJ, CF-4, and CH-4; NMMA FC-W Certified Recommended for use in Mercruiser and OMC