Video Professional Confessional: Psychic Engine Analysis Doug Kaufman learns of a new way to diagnose engine issues. Sponsored by MAHLE. Advertisement ByEngine Builder on Aug 9, 2019 AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:Mahle Video: 1929 Duesenberg Straight 8 Engine Video: Talking Shop with Pat Musi Video: The ARMEX Difference Video: Oil Viscosities Explained 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.