I've used Zmax on my EVO before I sold it and bought my Z and immediately went and got the Zmax 3 bottle kit for my Z. Haven't put the transmission formula in ( results pending on CVT trannys ). Definitely works better than sea foam. And if Carroll Shelby used it in EVERY car he built/owned, it's good enough for me. ( and I don't think paying him as a sponsor is why he used it, like he needed the money ). He stood behind the product and the tests do as well.
Tests Prove zMAX Works, SAE testing | zMax Micro-lubricant