I suppose 10w-40 or 10w-30 should be good for this car.
However, if you want to switch to a fully synthetic oil to have longer oil change interval then you can change to either 5W30 or 5W40 fully synthetic.
If with 5W30 there is oil burning then you can switch to 5W40, but 5W30 fully synthetic of a reputable brand should be good.
You can try PSO Carient 5W-30 or Shell HX7 5W-30 as both are fully synth. Total 5W30 is also good.