martinrrrr wrote:As long as Nissan says that it's ok to use Regular then you can safely use it. If, however, you want maximum acceleration times and torque and MPG then use Premium. I did the following before buying an 09 and doing the math yields the following:
Assume you drive 15,00 miles per year and assume that you get 20 MPG
Price of Regular = $3.00/gall x 15,000 miles = $2,250 per year in gas purchases.Price of premium = $3.25/gall x 15,000 miles = $2,438
Difference in cost per year is only $188.
I still have a big mental block buying premium so I buy the mid grade.
I think this puts it all into perspective. I have no problem running premium in my G35x, and when the dealer calls and says my '09 Murano is in, I will only run premium in that as well. I think it is worth the extra $200 to have the piece of mind and maximum performance, after all, performance is one of the reasons I love Nissan! I have a Shell card for both my wife and myself, so that helps save a bit as well. Just my thoughts.