Arctic Cat 671-00039-004 - APV 2.0 synthetic blend (semi-synthetic) hits the sweet spot of performance, protection, and lower cost per use Cold weather formulated to promote easy starting Optimized for exhaust valve performance and cleanliness Balances cleanliness and protection to keep your engine running better and longer Fresh pine-scented. APV 2.0 is engineered to replace Formula 50 and APV formulas. 1 Gallon / 3.79 Liters For use in all Arctic Cat 2-stroke oil injection engines up to model year 2020 with or without power valves. (Excludes 2014-2020 600/6000 & 2018-2020 800/8000C-TEC2 engines).