So a few months ago I posted about using 0w-40 oil on my Nissan Versa. I have a manual one and it is always revving at 3.5 to 4k RPMS at hot highways conditions (which is normal here in deep South Texas). So I decided to give it a try. I changed the oil back in Saturday. I already have 400 miles on the oil. It is a Mobil 1 FS 0w-40. Off the bat, let me tell you something fellow Nissan owners, the car feels more robust. No stupid, weak, rattle sounds here and there and no more stupid random shaking. Fuel economy is much better. I think people should really try it out once they are off-warranty and under warranty use 5w30 but use synthetic. Even when using synthetic it still thins it out by 4000 miles of OCI. I will continue to update and will do a UOA once my OCI is up.