Any motor with flat tappets, British or not, is prone to failure with "modern" oils. There are a few choices for oil with ZDDP. Valvoline VR1 Racing is one, but there are others. It is highly recommended to switch to one and stay with it. David Lylis 69 TR6 CC26160L 60 TR3A TS74461LO ************************************** See what's new at http://www.aol.com