Quaker State motor oils have kept engines running smoothly for 150 years. From the engines that win NASCAR races to the engines that take you wherever you need to go, count on our durable motor oils to keep you—and your life—moving forward. Choose a motor oil that will not only keep your motor running under all kinds of road stress but will also keep it running for a long time. Choose a motor oil that is so durable, it still passes critical standards for brand-new motor oil—even when it's ready to be replaced. Choose Quaker State.