Mobil 1 (120758) Synthetic Motor Oil 0W-20 (Advanced Fuel Economy), 5 Quart, Pack of 4 Low viscosity, advanced full synthetic formula; helps increase engine efficiency and improve fuel economy up to 2 percent Outstanding thermal and oxidation stability; helps reduce oil aging, resulting in long lasting protection Outstanding low-temperature capabilities; quick cold-weather starting and fast protection helps extend engine life Precisely balanced additive component system Excellent overall lubrication and wear protection performance for many driving styles and conditions, from mild to severe, where a 5W-20 or 0W-20 is recommended