Yep, keys only from the Chrysler dealer, with the vin number and prove of ownership. should not be too expensive. new keys are pre-programmed so they should not charge you programming fee.

Use synthetic oil ONLY.

Mobil One 0W-40 is recommended and should last 7k miles between oil change. You may use different brand synthetic oil other than Mobil 1, or use a similar viscosity like the 5W-30, but you should change the oil more offen since it will not last as long.