Video Oil Viscosities Explained What different oil weights and viscosities really mean and how they effect your engine. Advertisement ByEngine Builder on Aug 10, 2020 Engineering Explained and Mobil 1 demonstrate what different oil weights and viscosities really mean and how different viscosities effect your engine.AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:Mobil 1, oil, viscosity Video: Diesel Engines Lacking Power? Video: 2,200 HP 7.3L Powerstroke Engine Video: 605 Drag Boat Engine Video: 1914 Stutz Bearcat 4-Cylinder Engine Advertisement VIDEOS Watch Engine Builder's latest discussions and explanations. SHOP Shop the latest Engine Builder merchandise. SUBSCRIBE Stay up to date by signing up for the Engine Builder newsletter.