What is ZDDP? Does zinc in oil add any benefit? Do I need ZDDP? We get a LOT of questions about ZDDP. Enough time has passed from where ZDDP was common that a lot of people don’t know about it. Some even think it’s a myth! If you need ZDDP and you don’t run it, you could be staring down the engine failure. We wrote a guide to help understand the benefits of ZDDP and how to tell if you need it or not. For a little automotive chemistry, check out our article about ZDDP: https://fal.cn/3d4A5 | Spee