AMSOIL FORMULATES A WIDE SELECTION OF SYNTHETIC LUBRICATING OILS for all types of engine and gear ***** facilities cover a total of nearly 700, 000 square feet. AMSOIL has a documented history of innovation and leadership. First to develop an API-rated 100 percent synthetic motor oil. First to introduce the concept of "extended drain intervals" with a recommended 25, 000-mile/1-year drain interval. First U.S. company to utilize the NOACK volatility test as a standard of performance excellence. First to produce synthetic motor oils for diesel engines, racing engines, turbo and marine engines. First to introduce synthetic oils that legitimately contribute to improving fuel efficiency. First to manufacture synthetic gear lube for automotive use. First to manufacture a 100:1 pre-mix synthetic 2-cycle oil. First to manufacture a synthetic automatic transmission fluid for automotive use.AMSOIL Signature Series 0W-30 Synthetic Motor Oil is the industry benchmark in lubrication technology. Engineered with the world�s finest synthetic base oils and high performance additives, AMSOIL Signature Series 0W-30 is designed for those who demand the absolute best in motor oil performance. The exclusive �extended drain� formulation delivers superior engine protection and maximum fuel economy. AMSOIL Signature Series 0W-30 is a premium grade synthetic motor oil that exceeds the requirements of modern, high-performance engines and older engines. It replaces other 0W-30, 5W-30 and 10W-30 motor oils and consistently outperforms competitive conventional and synthetic motor oils. AMSOIL, the leader in automotive synthetic lubrication, produced the world�s first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine. AMSOIL Signature 0W-30 Synthetic Motor Oil lasts much longer in service than conventional oils. " The First In Synthetics Since 1972"