Royal Purple® HPS® series engine oils are specifically formulated to meet the demands of vintage, late-model, and modified high performance engines. Whether the challenge is increased valve-train load due to aggressive camshafts, or big engine power because of forced-induction or other power adders, HPS provides more than enough protection for the most severe streetcar and light competition applications. Royal Purple® HPS® oils are fortified with a high level of zinc / phosphorus anti-wear additive and a generous dose Synerlec®.
Due to consistently rotating stock, this product may not be in stock. Please contact us before purchasing to confirm availability.