Am I the only cheap owner here, or does anyone else fill-up with the first price they see on the gas station sign? I know what the manual says, but do we have to???

 

Yes, you are the only cheap owner, and yes you need to get better gas, your car will start crying soon enough

 

LOL. The gas prices are high but he needs to join the two dollars a gallon club along with the rest of us. Your car requires high octane gas.

 

my baby only drinks 93 octane....and yes, you have to.

 

Woo Hoo! Premium is down to $2.29/gal.

It was all the way up to $2.48. I thought I was going to kill myself.

 

I choose to use 93 because I want to get all the performance out of my car possible and I also run the JWT ECU which really needs the higher octane. That is just me.

It won't "hurt" to use the lower octane and I am sure most I30/35 and maxima owners use 89 octane. But if you want the most out of your VQ the higher is the best choice.

 

Yeah we all know the prices are crazy but you know what
fill it up with some of that good stuff. and you will (SHIFT_to the next level)
you will notice the difference and so will your car.

Do your VQ a favor high octane it

good luck

 

Id say if you don't have a modified ECU, you're probably fine going with the regular gas. Since I've got a JWT i'm stuck paying the higher prices...but hey at least my car is a lot of fun to drive!

 

Damn.... I only pay 1.78 for 91 octane gas 1.90 for 93....

 

summertime is coming people...watch the gas prices go up!!!
i pay 1.90 for 93 octane.

 

My car is running fine on 89 octane and it is completely stock with 175k miles on it. 91 octane is about 2.20 here...Phx, Az.

 

I've been using Premium all along. Just wondering if we can fill 89 and 93 octance half & half ?!?

 

I also used premium (which is 91 here) every since I got the car. I am using 89 now and it does not ping. The knock sensor should retard the timing a bit as needed. I doubt you will feel the difference unless you go to the drag strip. Even then I'd like to see some numbers with each grade of gas.

Now if I go to Flagstaff (7200') in the middle of the summer I will put 91 octance in for that run, otherwise I won't.

Just put a tankful of 89 in there - it isn't going to melt your engine. If you notice detonation, then drive it easily until there is ½ tank left and fill it with premium.

 

I live in Chicago area (RFG-required!) and gas prices just shot over $2 for premium and is abt $1.80 for regular. I haven't tried regular so far, but I tried filling in with full tank of medium and I could clearly hear the detonation - the car was no longer calm .. the knocking was very audible. Then I filled premium half tank and it was relatively calm, but with full tank of premium it's quite calm and I can feel good performance.

I thought that the lower grades might warrant us to replace knock and other sensors that cost abt $400 to replace if we try to save $100 over a year - it's just $2 more per tank for premium over medium. My 2 cents. But I was wondering if anyone here mixes grades and use it without increase in knocking.

 

There is actually no mid-grade octane gas. Gas stations get the mid-grade gas by mixing the lowest and the highest octane together before it comes out of the pump.