An integrated oil system manifold is provided, which includes a reverse rotation protection element, a main pump check valve, an auxiliary pump check valve, and a pressure relief valve, wherein the reverse rotation protection element, the main pump check valve, the auxiliary pump check valve, and the pressure relief valve are integrated with a housing of the integrated oil system manifold. Furthermore, a temperature control element, a filter, a heat exchanger, an integral main pump assembly, and an integral auxiliary pump assembly may also be included in the integrated manifold. An associated method is also provided.