so the maxima indicates to use 93 octane; well i have always used 87 with no problem. i don;t hearany pinging and the carruns fine....

 

this has been discussed WAY to much
USE WHAT YOU OWNERS MANUAL SAYS - 91! (not 93)

you might not notice anything now. but the few cents extra on gas will be better then what you might have to spend on a repair later

 

Do you really think that 91+ octane was a good selling point? If it worked on 87, they would have suggested it. Use what Nissan suggests.

 

91 isnt an option in some places only 87-89-93, and iv'e heard using a higher than normal octane isnt all that good for your car either

 

The owners manual says 91 or higher. The manual also states that you can use 87 or 89 only if 91+ isn't available. Using 91+ octane in a car that only requires 87 is a waste of money. 93 is the only high octain available in my area so that's what I use.

 

Hmmm...think I'll stick with what the book says...which can also complete sentences/grammar and spelling.

 

Don't be so hard on the . If he wants to use 87 w/o any problems, let him.

 

Someone has to toughen up these young wipper-snappers.

 

my car seems to get more mi to a tank w/higher octane.

 

My 02 GLE owners manual states "use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock index) number (Research octane number 91). The next paragraph states "For improved vehicle performance, Nissan recommends the use of unleaded premium gasoline with an octane rating of at least 91 AKI number (Research octane number 96)."

It goes on at some length about reformulated and oxygenated fuels. Toward the middle of the text is the statement "in most parts of North America you should use unleaded gasoline with an octane rating of at least 87 or 91 AKI."
At altitudes over 4,000 ft. it says you may use as low as 85 octane.

This entire section is somewhat ambiguous as does "at least 87 or 91" mean one, either, or both?

In my opinion, the lowest octane fuel which doesn't cause predetonation knock (pinging) is the correct fuel for any gasoline engine. The higher octanes do not provide higher fuel values, as they are less dense and actually contain less energy per unit volume. I have always used 87 in my Max in stock tune, driven primarily in a warm to hot climate at about 1,800 ft. elevation. No pinging has ever been detected and it performs just fine.

One man's opinion.

 

You don't treat your Tungsten Blue to any high octane?

 

But your not going to here any knocking and pinging because we have anti knock sensors which automatically RETARD your timing, thus reducing your overall performance at a tune of several HP.

 

As it has been explained to me before in many of these discussions, lower octane will probably result in lower fuel economy because it burns faster.

 

He would probably notice it briefly if the car was under heavy load going up an incline using low octane gas. The computer would then make the timing adjustment.

 

Forgot about that one. Good point.

 

I dont' in the winter, but do run premium in the summer. At -20 there is very little chance of predetination and no chance to use any of the available power anyway even if I am dropping a couple of hp.