It is not preferred or recommended it is required or you will do damage to the engine. Premium fuel of 91 Octane is required and must be used.
Premium unleaded required.
Per the owners manual 91 octane fuel (premium) is recommended. Using a lower octane decrease the performance of the vehicle.
93 octane is the first choice, but 87 is fine, if you can't find 93 octane. optimum performance is achieve by 93 octane.
In the fuel tank.
where is the fuel pressure at
gas tank
Fuse #32
Fuel Tank capacity of 1996 1997 1998 Maxima is 18.5 Gallons. See the Edmunds and other automotive web pages to get the specifications.
Regular fuel (87) is fine.
91 or higher octane fuel
No, it has a Multi-Point Fuel Injection system. There is no carburetor.
87 Octane Regular. Using a higher octane fuel is a total waste of money and will provide no benefit whatsoever.