for a coupe, is it okay to feed it regular?? or do I really really have to feed it ultimate/premium?? what would happen if i did give it regular. just trying to save some cash.

 

Don't ever run regular in you car, there's a big difference in feel and performance. Plus, it's about a $3 to $5 difference per full tank so why?? Fill up with regular and you G will feel like a damn minivan, trust me.

 

I got crushed when I asked this question, hopefully you won't..when I had my Maxima and when I have test driven Infiniti's I was told by both places 93 is not required but recommended...I was told the computer would pull timing to accomodate the 87 octane meaning you would not get the full performance out of the car but you would not hurt the engine..

People on here blasted me by saying if you can't afford the gas don't buy the car when that was never my question, just wanted to confirm or deny what the people at the dealership said..

I am sure you will have similar comments thrown your way since you said you wanted to save some cash..

Good Luck!

 

There's two ways for you to answer your own question, by the gas fuller it's
written Premium fuel only and then in the manual it says the very same thing.
Unleaded or Premium gas....all gas should be unleaded unless you don't live
in the U.S.....see no
Gary

 

This is how it was explained to me. Take it for what you want. Consult your manual if you have one, it should be in there.

The coupe has a high compression engine. therefore you should use a higher octane in the tank. A lower octane detonates easier than a higher octane. You can actually cause an earlier detonation with a lower octane from the heat generated in a higher compression engine. This would lead to knocking or to put it in terms I understood: the piston would not be at the top of its stroke before the gas mixture detonated. This is not good for your engine.

I believe that the higher octane gas is required not recommended in our cars.

Also, Kazaam is right it really is only a couple of bucks difference for better performance.

 

Premium 93 Octane All Day

 

100 octane FTW

 

93 octane or bust!

 

but yeah

if your car says "premium unleaded only" the engineers put it there for a reason

you wouldn't put diesel in would you? so why try to save $3 a tank and put 87 in?

 

Read your manual.
You are not talking a lot of difference in money per week. If you really can't afford it just sell the car and purchase something much more economical.

 

100% 93. Got some for $1.99 the other day, WOOT!

None of that 10% Ethanol crap...

 

If you have to worry about the 3 bucks difference to fill regular vs premium, this is the wrong car for you.

3 bucks, once a week, is 12 bucks a month.

Skip McDonalds for 2 days and you're good

 

$1.99?!?!?! WHERE DO YOU LIVE?! Lowest I've paid is $2.09 - which isn't so bad if I may say so myself

And hey, the guy was just wondering. If you CAN save money, might as well, right? He got his answer, no need to tell him to sell his car.

 

91+ ALL THE WAY. I tried regular one week and noticed a big decrease in performance bro, Ever since then, Had to apologize to my G for being stupid and putting less then 91+. From now on, my baby only get the best. Treat your car to the best bro!!!. Hope this answers your question.

 

After using 87 octane in my G35 Coupe for approximately 2 months I can say in honesty the following.... There is very little savings for your pocket book, unless you are driving a zillion miles a year. The big differences are 1) a significant decrease in engine power during even moderate acceleration. 2) a drop in MPGs of approximately 2MPG. So... Is it worth using regular? Not for me.