I have a 2012, 4.6 Genesis. I am coming up to the 15,000 mile/ 2 years, oil change. I have used Synthetic oil, Mobil 1 Advanced Fuel Economy, 0W-30. But Genesis recommends 5W-20, or 5W-30. Should I change to 5W-20, or 5W-30? I’d appreciate your help in recommending the best synthetic oil, thanks in advance.
Marty
Marty