Castrol 06243 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil, 1 Quart, 6 Pack 15,000 miles between drain intervals guaranteed* Recommended for severe applications such as towing and hauling, high performance driving, frequent short trips or idling, dusty, humid or extreme temperature environment Engineered with fluid titanium technology that offers maximum strength under pressure Reduces metal-to-metal contact across a range of different driving speeds Decreases engine deposit formation to help maximize engine response 3X stronger against viscosity breakdown than Mobil 1 Extended Performance** Best advanced full synthetic money can buy API SN, ILSAC GF-5, ACEA A1/B1, Meets Ford WSS-M2C929-A, Ford WSS-M2C946-A, Honda HTO-06, Meets engine test requirements of Chrysler MS-6395 Castrol recommends the use of Bosch oil filters