costco 91 here.

:iagree:

I wonder about the so called top tier gas companies. It seems they want you to spend more money i really don't think it really helps. Chevron, 76, shell are expensive. What is wrong using 91octane arco, sams, hell safeway grocer store chain gas and raley's grocery store chain gas?

its the additives i believe

That is correct. All gas is the same coming out of the pipeline the only difference is the additives put in by the retailer

i only have used Super Premium in my car, too afraid and cautious to put the cheaper Octane in my car... fearing gunk will rob the car eventually, .... i know i prolly could go to the regular premium.... but like i said, im too cautious...

They have done some independent testing and the additives they use definitely make a difference with regards to carbon buildup.

Quick Trip 93 or shell v-power. You'd be amazed how good quik trip is for the price. They don't make a profit on the gas and make all there money on the store. They only broker the highest quality gas for there stations.

Super Premium. It is what Nissan recommends and the savings by using cheaper gas is not worth it.

The simple fact of the matter is the cost savings over a period of one year will be less than $250 in most cases. Even if you assume a $0.50 savings per gallon, filling up 18 gallons weekly for one year still nets a savings of less than $500. For a $30,000+ vehicle, I don't think $500 qualifies as enough savings to use cheaper gas which in the manual is specifically not recommended for any use other than temporary.

Not entirely true. The do make at least some money on gas most of the time however they also lose money on each gallon they sell at times. It all depends