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. - Unsurpassed sludge protection to keep your engine closer to factory clean. - Exceptional protection and cleansing, even at the longest manufacturer-recommended oil-drain intervals.