Recently bought a clean 06 G35 sedan. I’ve had no problems so far other than the infamous gas gauge, besides that I get this “rust” colored stain on my driveway but it only happens when it rains. I have no idea what it could be I’ve checked all my fluids and everything looks good to me. It’s only ever had one other owner and the lot I bought it from has had it for about 10yrs hope this helps. Thanks in advance