Amsoil ASL series will allow up to 25,000 miles or one year between oil changes or their SSO (signature series) will allow up to 35,000 miles or one year. Ofcourse this depends on the type of driving you do, normal or severe service and condition of your engine. You must also use an Amsoil oil filter to obtain this extended oil change interval claim from Amsoil. The SSO or signature series is a 0w30. Go to the Amsoil web site and check it out. I use their products in all of my vehicles including their lubes. You will also save money along with using less oil plus your engine will last forever. Find a dealer in your area as you cannot buy Amsoil at any parts places. This is how they keep their prices low. Once you start using Amsoil you will never stop using it.
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