Recently i got another promotion at work and no longer have to take deliveries(loving to drive may this job so nice) but since i was going through a tank of gas every 4 days i switched down to 87 octane, 2 days ago i switch back to the 90's (91 92 93) octane and i forgot how much jump our cars have. its so nice not being in safe mode every morning and having to sift from 2nd gear because my first was a 2 legged dog..

when i switch i also tossed in a can of injector cleaner just to clean the junk crap out.

im still testing to see if my gas milage will go up or down to tune it back to normal.

anyone else enjoying the perks of 90's octane and of course the downside of a 50$ fillup.

 

I use 93 in my 04 max but only 89 in my 99. I put alot of highways miles on the old one and the gas milage using 93 was lower than using 89 octane. Its a little bit slower, but i can deal with that. I just run some lucas injector cleaner every month and its fine.

 

i use 90's too, felt a difference and i really dont care about gas mileage/cost so i always go for the highest

 

what is this 87 you speak of, my VQ never seen anything other than 93

 

Yeaaa my max feel just like how it was whn I bought it when 93 goes in. But I'm still trying to figure out if the gas mileage went up or down from me switching from 89

 

lol.. yea me too i feel guilty even thinkin bout pressing dat 89 button at the pump..

 

You mean theres octanes higher than 87?

 

If you're planning on street tuning your Max without grenading the engine, then yes.

 

Well said.

 

I always use 93. Even when it was 4.09 last summer, still had to do it. Although 62.00 fill ups was a little rough, it's worth it once you get out on the road.

 

Anyone trying to test different fuel grades for mileage right now might get a false improvement from the switch. Summer is a lot better for mileage than winter because the temperature rises and the fuel is better across the board. Try it in the middle of summer and see what kind of results you get. I get better mileage on 92-3, without a doubt.
Also, the winter mix for one octane may help your mileage, but the summer mix of another might be better. Unfortunately, it's hard to know exactly what your gas station is putting into your tank, so there's a lot of guess work.

 

Always use premium in my cars that require it. Always use regular in my cars that require it.

My '02 runs so much better since I got it from the P.O. He was using 87 and after a few tanks of 94 she feels pretty much like she should.

 

We had customarily put 93 in the wife's car.

The other day I decided to try 91 for the first time (it's extremely hard to find 91 around Baltimore).

I'm going back to 93. I can definitely feel a difference.

 

when i've been low on money, being unemployed, i've put in 87 about 2 times and have noticed a big difference performance wise. mpg has gone down too those times i used 87. 93 only for me

 

well, it has been a couple weeks and i have to say, gas milage went up an easy 4-7%
normally i get about 400 to a tank on 87, now im at 450 with no light yet. but it was lots of highway driving, in the city it tanks a bit because of my newfound 1st gear powuh lol still getting used to it

 

I cant use anything other then 93.....

 

If your FI is giving you issues and not letting you run other octanes, I could always take it off your hands.

 

LOL, it doesnt give me any issues. Its currently tuned on 93, and with the Texas heat I will always use the 93 octane.

 

no more 89 for me after reading this, i want to feel this diffence everyone is talking about and ill get back at ya, even when i put in 89 my freinds are like are you crazy thats so much more expensive why would you put that in.... lets see a reaction with the 93

 

I learned to always use 93 from my 5th gen, my city mpg would go down to 18-20 (from 25), and the car would feel so gutless below 3k. The savings were not worth the drop in fun and mpg.

I've never tried anything less than 91 in this car (Damn KS and it's lack of 93, I'd have to hunt down a BP whenever I took a trip outside of Manhattan, just to get 92).

 

you guys are all crazy!! I use 87 always. i drive the hell out of it then fill it up with 87 again. I have never noticed a difference between 92or93 and 87. cause really theres not that great of a difference. you guys make is seem like night and day, its all in your mind. maybe it idles a little better but I have never noticed and trust me I know when this thing goes over a bump funny I always pay attention to the little stuff on this car. oh PS i put on about 300mi a week so I go threw my fair share of gas.

jake

 

True story below.

For about eight months my (wife's) Max had a busted KS due to repeated low-octane use and was running on retarded timing. I may as well have been driving an Altima 2.5 with the loss of power... and a Town Car with the loss of efficiency.

So paying more for gas by having to visit the pump more often is definitely not anything in my head.

 

i noticed a difference though with 93 and i blow through a tank usually every week to a week and a half, and ive got a 5 minute drive to work. a extra 15 cents/litre for 93 isnt going to kill me

 

I used 87 for about a year. I definitely notice a difference now that I've switched to 93. The car feels more responsive from idle to 3k RPM. My gas mileage has also increased immensely. I'm actually breaking even/saving money by running 93 in my car. It used to take me about 4-5 days to drain a full (Over the F) tank of gas of 87. It takes me about 6 days to drain out a just below full tank of 93.

With the 87, my DTE gauge also used to tell me I could go between 50-55 miles on a 1/8 tank of gas. Now it runs somewhere around 70-75

 

my 06 got nothing but 93, even when I was getting screwed over by my company and traveling a 1000 miles a week for work, still used 93

I've noticed many times over the year that certain cars that should get premium, are such different cars when your behind the wheel, slow no pickup, they lag, but since the owner is use to it they never pick it up, it's like when you get new tires, you did not realize how the ride deteriorated, but with new rubber it suddenly such a better ride

 

Man i swar our owner manual say use premium gas only.....

 

IIRC the 3rd gen one says use premium for best performance, someone posted a pic of the page in the owners manual

 

fixed.

I remember realizing I hit the wrong button (stupid shell has the damn buttons reversed on the 2nd pump on the same side )
I was all
and pumped 93 to finish. So I basically bought 90 that day.

basically choose 87 if you feel you need to save roughly $0.25 a gallon.
choose higher if you experience knock or care about having the maximum possible output.
but stick with whichever one so your computer doesn't hate you.

93 for my 04 always and forever. it's a whopping 8% more
I remember when gas was less than $1. 93 cost at least 20% more back then.

 

im the one stuck paying over a dollar a litre (over $4/gallon) for gas and i'm in the Province with the most oil and gas resources, figure that one out

 

Canadians and their weak sauce dollar.

 

we're nearly matched to you guys its like 1USD=1.0048CDN or something last time i checked

i think its because we export most of our oil/gas, but we only pay 5% GST and no PST so that kinda makes up for it

 

i never said it doesn't help I just said you guys make it seem like day and night, obviously its different and there are ovbious benefits that come from higher octain. im just saying you guys are crazy for saying "oh boy I can tell the difference it is way faster and quicker off the line now." I just feel a statment like that is deserved for headers or some ACTUAL engine mod. its kinda like when someone says I did the ghetto air box mod and my car was WAY faster......really its not dude. im obsesed with my maxima so dont get me wrong but seriously im not stupid...its a 4-door family car man not a CTS-V or IS-F but a 255hp V6 (my 02) in reality....its in your head.

jake

 

Well I've used both 89 and 93, and I believe I get better mileage with 93, at least if I'm not driving like a maniac! If I drive normally, I get better milage with 93, the car seems to run a bit smoother and is less jerky.

 

that statement is wrong fyi.

 

This argument will never end.

 

yup their was someone in the 7th gen forum who said the gas attendant accidentally filled his car with 87 and the moment he started it till some BS time in history, whatever length of time he said he drove the car, he said it knocked and rattled and vibrated, thats a little extreme, in fact that is way over board, my 06 and 09 have both been on occasion filled with 87, and except for the lesser gas mileage still ran as smooth as ever just like on their diet of 93

 

thats what im trying to say. I just dont get it when people say it is way faster and you can feel it. I think its funny

 

I mean...whatever you say.

My car also rattled and detonated under load with 87 in it. Vibrated, no. But the "bees in a can" sound, yes. I've since Seafoamed and started using 93. No more rattling and detonation.

I'm sure your car ran fine. But try stepping on it hard sometime when you have 87 in it. You'll feel the difference.

The car has a knock sensor for a reason. When it recognizes detonation, it retards ignition timing to keep the engine from getting damaged. The car, just in normal driving conditions will "feel" just fine, sure. But when you break it down, the car wasn't really designed to take 87, so you're only shortening the life expectancy of your engine...

 

i can see feel it, going into higher RPM my 3rd gen sounds cleaner with 93 than 87, i still say just shell out a few extra bucks and get the best, same with oil, just get the best and dont cheap out

 

Maybe you're just imagining it. Sounds like you take acid before you drive...