I have had 4 cars with the 3.5 and as long as you keep the oil changed at 3k miles I have no issues other than at 100k the starter goes out on EVERY one lol but that means this has a new starter now! I love this motor and I love this car but I found a deal on a infiniti g35 and I jumped all over it without really even driving the G which is smaller than the altima which i dont like but oh well. I had a sale pending but they are all over the place. They offered $4000 for it so im open to offers.