I am currently at 6000 Mi now and most of my driving is highway with some city. The car is great, but the shift from 1 to 2 is the pretty notchy even when it warms up. I am not alone in this complaint due to many threads on forteforums.com about it. Their fix is either Redline MT85, AMSOIL MTG 75w90 GL4, or AC delco 12346190(Castrol Syntorq). Since many people own kias on this forum I was wondering which fluid remedied the notchiness.