Owner's Manual
Page 226
... may use unleaded gasoline with an octane rating of the vehicle, for which NISSAN is not responsible. If you detect a persistent heavy spark knock even when using gasoline of the stated octane rating, or if you hear steady spark knock while holding a steady speed on level roads, have your vehicle checked at ...Nevada, southern Idaho, western South Dakota, western Nebraska, and the part of Texas which is directly south of the above can cause persistent, heavy "spark knock." ("Spark knock" is a metallic rapping noise.) If severe, this can lead to correct the condition is misuse of at...
... may use unleaded gasoline with an octane rating of the vehicle, for which NISSAN is not responsible. If you detect a persistent heavy spark knock even when using gasoline of the stated octane rating, or if you hear steady spark knock while holding a steady speed on level roads, have your vehicle checked at ...Nevada, southern Idaho, western South Dakota, western Nebraska, and the part of Texas which is directly south of the above can cause persistent, heavy "spark knock." ("Spark knock" is a metallic rapping noise.) If severe, this can lead to correct the condition is misuse of at...