engine oil

HELLO EVERYONE First question: I refill my car 6.5 liters then i check the oil and i found it full should not to add .. and the Owner's manual show you the capacity 6,9 liters am i add 6.9 L or just add 6.5 L second question : i use liqui moly molygen 5w-30 is it good for my car? the engine...

Hello, I wanted to get an opinion on what is the best engine oil for v6 genesis sedan 2012 based on the experience you guyz have? The owner's manual recommends quaker state. I am not a big fan of quaker state. Amongst Mobil 1 and Castrol which one is better?