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I've been using AMSOIL synthetics for 20 years and I have never been disappointed. I use AMSOIL in everything I own that has moving parts. 325,000 miles on only eight oil changes with no engine work or fuel injector problems, that has been my personal experience! Enjoy browsing the AMSOIL product line - and thanks for stopping by. Unlike other product manufacturers, AMSOIL isn't afraid to give you detailed information on products you may be interested in. Thank you, John Heiermann