Higher Mileage Engines lose engine compression as rings wear, gaskets become brittle and valves do not seal tightly, increasing oil consumption, reducing gas mileage and decreasing overall engine performance. SuperTech High Mileage motor oil is formulated with a unique combination of premium base oils and an enhanced additive system to provide increased protection for higher mileage engines. SuperTech High Mileage motor oil helps restore seal condition to reduce oil consumption and increase protection against high temperature deposits and ring sticking, helping your engine stay cleaner longer. Meets or exceeds U.S. and import passenger car and light truck warranty requirements for all automotive gasoline engines currently in use including fuel injected and turbocharged, where a SAE 10W-30 that meets API SN, SM or SL and ILSAC GF-5 or GF-4 is specified. Compatible with leading conventional or high mileage motor oils. Check owner's manual for proper SAE grade and API classification.