This Video shows tests and results of Amsoil Signature Series Motor Oil 5-30  being tested against other motor oils.  These tests were conducted by a third party that had no affiliation with AMSOIL and results are shown on video after each test was conducted. There are many synthetic oils on the market but none of the competition beat AMSOIL in these tests that were shown and conducted. If you want to use the absolute best synthetic oil on the market then AMSOIL is the way to go!