SAE 25W-40 | Quart Formulated to provide excellent lubrication and corrosion protection. Stern drive and inboard engines operate under high load and running stresses. Developed for the marine environment and will outperform standard 4-cycle automotive engine oils. Meets or exceeds quality performance API SJ, CF-4, CH-4. NMMA FC-W Certified. Recommended for use in Mercruiser and OMC.