it depends on the climate you drive in, check with your local outo parts dealer and they should be able to tell you exactly what you need. Most of the time a good medium weight oil is ok. however in exctremely low temps you may need to pay more attention to the low numbers.
looking for what needs to be done to replace an oil pan on a 2001 Nissan xTerra 3.3 v6
Ghozein oil. U can get it at pozein store
you use the 2009 oil which is premium ok ugly
The Nissan Quest uses a good quality 5W30 oil
Vegetable oil
Extra Virgin Olive Oil
20w50 castrol
Mobil 1 full Synthetic or Dealer Kendall Full Synthetic
I have a 1990 and use 10w30
SAE 5w20
Sae 10w-30
Nissan recommends 5W/30 Engine-oil for Nissan Altima (same as for Maxima) for 95, 96, 97, ... later years.