1. 87 Octane is all you need for the regular engine.

2. The center caps on front do not say Nissan on them. They have open centers, and you can see the hub, which should say "automatic" if it hasn't worn off.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist