Specifically formulated for use with all 4-stroke outboards that require FC-W Certified, SAE 10W-30 oil. Premium-grade base stock and special additives make for a superior-grade oil. Contains significantly more performance additives than automotive oils to stand up to the rigors of the 4-stroke outboard environment. Special viscosity improvers ensure stay-in-grade performance in high-RPM, 4-stroke outboard applications. Meets API service requirements for SJ, CF-2, CH-4.