See also:

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended above can cause persistent, heavy spark knock. (Spark knock is a metallic rapping noise.) If severe, this can lead to engine damag ...

VQ25HR engine
INFINITI recommends the use of unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research octane number 96). If unleaded premium gasoline is not available, ...

Automatic transmission
7 speed automatic transmission The automatic transmission in your vehicle is electronically controlled by a transmission control module to produce maximum efficiency and smooth operation. Shown on t ...