Will Oils From 0W20 To PURE Lucas Additive Hush A 4.0? I Was SHOCKED!!

Part one of a Two Part Longer video, Ever wonder if any difference in oil's weights or viscosity will help quite down a noisy jeep 4.0 engine. Regardless of endless posibilities, I try some simple common oils and myth's on my way to the truth of these engine. In this part I just concentrate on oils which leads to a shocking results! Part two I dig deeper and lay down some more false information you may have been fed, it's even better than part one! Thanks -Dex