RAVENOL USVO® High Fuel Economy HFE SAE 5W-16 Engine Oilis one of the new breed of fully synthetic, low-friction engine oils with Ravenol's unique USVO® andCleanSynto® technologies, meeting the new SAE category 5W-16 for passenger cars. This futuristic lubricant formulated with tri-nuclear molybdenum and OFM (Organic Friction Modifiers) is especially recommended for hybrid vehicles.