Mobil 1 0w20 is going to be just fine for your Altima. I believe 7500 miles is what the manual says for non severe operating conditions. So if you are under warranty and your driving profile fits the severe service then it is only 3750 miles. Make your mileage decision based upon your usage pattern. And the Mobil 1 oil filter is just fine as well.
Edited by bbhero (04/21/17 04:59 AM)
Nissan Altima 3.5 Coupe Valvoline Advanced Full Synthetic 5w30 Federated Auto 4612ex
"Treat your family like your friends and treat your friends like your family."