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MAG 1 High Mileage Synthetic Blend Motor Oils formulated with FMX offer superior oxidation stability, extra protection against heavy load conditions, additional high temperature protection, and better cold weather properties than conventional motor oils. Contains a blend of synthetic and premium conventional base stocks with seal conditioning agents, cleaning agents, anti-wear additives and friction modifiers for added protection. Provides performance benefits for high mileage, new and re-built engines. Formulated to exceed ILSAC GF-5 performance requirements. MAG 1 5W-30 High Mileage Synthetic Blend Motor Oil is engineered to retain high temperature film thickness and reduces engine wear.