i believe your supposed to be running premium at all times with a northsatr motor, i know my Aurora required premium, since the aluminum engine tends to run hotter..
It took me a while to explain to wifey why she needed to use it, and finally she believes me, now that she is getting 23mpg instead of the 20.5 she was getting before, which more than makes up for the added cost, not to mention the better performance and longevity you will see with premium fuel
as for the injector cleaner.. I run Chevron techron in my car every 10k miles or so.. IMO there really is no need to do it any more frequently
2002 Nissan Maxima SE - 15.143 at 91.74mph - Short Ram Intake - 2* Timing Advance- Tein Coilovers - Front Strut Brace
00-01 SE Tails - Smoked side markers - Painted and Cleared Headlights - Weathertech rainguards - Tinted to 27% - CF Gauge Trim
Stereo: Eclipse CD8445 - Kenwood KAC7201 - Kenwood KAC-729s - Cadence Components - 2x MB Quart Reference 12s
2000 Bonneville SE - Retired