yeah, jersey is the only state where you don't pump you're own gas. it's supposedly illegal to pump your own gas. but i've done it when the sation is really busy. they don't really inforce it or anything. it's a pain in the **** when they're busy, but it's nice in the winter, cause i don't have to get out of my car, haha. yeah, i dunno, i'd really rather not mess around with that octane booster stuff. some people swear bye it, others say it's one of the worst things for your car, i don't really have any experience with it. so, i dunno.

 

Actually your MPG should increase. The lower octane gas burns faster, and the engine runs more efficient on the lower octane.

 

dude youll be find dont worry about it, you car will run regular u just will get crappy gas milage

 

You're fine... Just put premium back in on your next fill up. It's not going to hurt anything from using it once.

 

I've been using 87 since June, doesn't hurt a thing. Just started using Premium again. I noticed a 3mpg decrease so if I calculated the ~2 gal of gas per tank I would have to use vs. the difference between $ of 87 93 fill up it was cheap to use Premium.

 

Where I'm from, most stations have 87, 89, & 91. 89 is literally just a mixture of 50% 87 & 50% 91, If you had 1/2 tank of 93 left, then you're at about 89.5, which I'm sure would be fine. When gas stations have 3 octanes, the middle octane is usually just a mixture of the top & bottom octane.

 

Oregon has the same rule. And gas stations enforce it! Sort of a full employment thing rather than a safety thing if 48 states let owners pump their own. It's like a time machine when the attendant comes to operate the magical, mystical pump (at least for those of us who remember the days before self-serve).

 

ORLY? Huh, I didn't know that. I thought Jersey was the only state. Yeah, I'm too young to remember that, but I've seen it in movies and t.v. shows, haha. I always have to remind myself I've got to pump myself when I fill up outside of Jersey.

 

Update:

Well I've driven my car for a couple hundred miles(I have a long commute for work), and have filled up a couple of times. I made sure they used premium this time, I paid more attention, haha. No ill effects so far.

 

Is this is a joke or being serious? How does the engine run more efficient on lower octane? Running on lower octane forces it to retard timing to prevent knocking which yields less a lower pressure profile during that combustion stroke.

 

The salesperson at my local dealer says he had been using 87 octane on his G37 for 12,000 miles with no ill effect...so you should be ok.....nothing will go wrong with your engine....

 

^Yes, it does effect the car. lol

VQ37HR with VVEL can only adapt one map at a time due to the complexity of the timing (or so I heard... lol). I bet that car is making like 220whp. hahaha

 

Co-worker of mine leases a G37 and she only puts regular in it.. sometimes she puts mid or super(dumb biatch!). It's still running fine.
I'm sure you're fine

 

It's in the manual, you can mix if necessary, but recommended is straight not on the rocks and shaken not stired.

 

yeah, it's been a while since this occurred, and no ill effects. i didn't really notice any at the time it happened either. i've made sure it's got nothing but 93 or 91 since though. luckily the price of gas has gone down, so it's costing me the same as i was paying for 86 not too long ago.