hey kids since i work @ a nissan dealership thought i'd share the news since i get the tech line and updates on recalls and what not. new tech line shows that the 350Z does not work well with synthetic motor oil. we've had 10 350z with engine issues in the last 3 months here and replaced the engines. now nissan is saying that it recommends using syn-blend or regular oil in the engines. i know this is contrary to what the owners manual said but i'm just passing along nissan corp info to the IA 350z owners