Specs: 2-Cycle Engine Oil, Antioxidant fuel stabilizer protects fuel system and extends fuel life, Clean burning with low smoke, Detergent additives keep rings free, engine parts clean and prevents exhaust port blockage for easier starting, Each bottle makes 5 gallons of 50:1 mix, Full Synthetic, blue color, Oil Weight: 50:1, Size: 12.8 oz. bottle Stens branded parts are trusted by professional dealers to perform OEM quality repairs. The Stens name is featured on all Genuine Stens product packaging.