A premium-grade base stock and special additives contribute to the outstanding performance of this of 4-stroke outboard oil.This oil contains significantly more performance additives than automotive oils to stand up to the rigors of the 4-stroke outboard environment. Special viscosity improvers help to optimize the performance of high-rpm 4-stroke outboards. Meets API service requirements of SJ, CF-2, CH-4.Key FeaturesFormulated for use with all 4-stroke outboard motorsMeets API service requirements of SJ, CF-2, CH-4Special viscosity improvers help to optimize the performance of high-rpm 4-stroke outboards