Just bought a 2018 Renegade Sport with a 2.4L yesterday got a great deal sticker listed at $24,500 with options,with my trade in an added rebates which was a surprise by the way, I got it for $18,200 it had 21 miles on it. Haven't had it long enough to say I'm overjoyed by it but I like it so far. But dealer said it comes from factory with 0-W20 conv. Oil an to bring it in at 3000 miles for first change an 5000 after that does that sound right? I've only run synthetic in the car I traded an got 203,000 miles on it b4 it had to go. Should I stick with conv.oil or have them change it to synthetic for the Xtra money? Any thoughts?