Shell Helix Ultra is a range of top-tier motor oil that is formulated using the unique Shell PurePlus Technology, yielding a motor oil that actively helps keep engines clean. Starting with the unique Shell PurePlus Technology allows the product to provide even higher levels of cleansing and protection. - Designed to meet the demanding requirements of particular high-performance engines, including BMW and Mercedes-Benz, and those requiring API SN/CF or ACEA C3. - Shell has a close working relationship with Mercedes-Benz and undertakes lubricant research and development projects with it. - Passes an extensive range of performance tests to meet engine oil specification MB 229.51.