Hello everyone! I've stalked this forum many times but I've never joined. I have a 2019 Nissan Frontier 4.0 V6. I went by my local dealership today to get an oil change (I prefer to do it myself but I moved into an apartment where it makes it hard to do). I asked for full synthetic, expecting to get 5w-30 full syn. What they put in is 0w-20. I did some research, and saw that some of you on the forum have had this issue before. I then went back and spoke to the service manager, and he claims that when he looked up my vin it says he can use 5w-30 or 0w-20 and that it wouldn't violate my warranty. So I left. What would you guys do? Thanks!