So i just changed my oil today for the first time having the srt4. I used the 5w-30 because i wasnt sure what else i could use yet. I got mobile 1 oil n filter. And put the 5 qts in. What other oils could i use? ive been reading around and alot of ppl say 0w-30? i live in illinois so its very cold winters and very hot summers. And the search button isnt working so im sorry if u have heard this like 100000 times. Im a noob being a noob haha. Any advice would Help out alot for the next oil change Thanks everyone!!