I like the illiterate choice of "Are car takes gasoline?"

 

92 is the minimum that has ever been in my tank. the previous owner(dads freind) i knew and was **** about keeping receipts(he has a stack of gas receipts all of which show premium was used), 92 i will put in, in most situations but 94 if the price is good.

 

I haven't had any problems with 87 yet but I'm at 3,500 feet, so that's more like 90-91 at sea level. I've had some friends throw knock sensor codes when using 85.

And for those people that are saying they "can't afford" premium...it's like $4 dollars extra compared to the cheaper stuff on an average sized refill.

 

No... Damn people who keep buying SUVs.

Yes, people, that includes your mothers.

 

93 Octane from Mobil or Exxon.

 

Does it make any difference if I get Shell 93, Sunoco 93, or Mobil/Exxon 93???

Or are they all the same??

Thanks for the help!!

 

Damn george bush and Suv's, fair enough?

 

As long as they're both gone by 2008...

 

In the I30 I put 89 to 93

 

Shell puts in an additive which is supposed to clean out deposits in your engine (v-power). That's what I usually get.

I stay away from Exxon gas as they have high amounts of sulfur in their fuels. Not sure about anything special with Sunoco

 

I read that Sunoco is now good, too. I go to Shell and Sunoco stations.

 

good how? they use additives as well?

 

Everyone uses additives. It's just a matter of what kind and how much.

 

My car has been kicking *** with Chevon supreme lately.

 

i go to getty or shell 93 with NOS octane booster it kicks in liek about 3 hourse but didnt expect its realy that good gives u 6 octane numbers to ur gas so ye 99 =D

 

Herrrm...Maybe a reason for making knock sensors go bad? I use 91-93 octane from exxon, shell, or bp. I don't discriminate when it comes to brand, just octane.

 

Don't waste you're money on that NOS ****.

 

god damn, whats the recommanded gas for a maxima. I havn't ever seen 94 octain up here in CT.

 

87 always now at 400089 miles and still going 1991 GXE Maxima. Thats about 1096 tank fulls as I get anywhere between 300-365 miles still to the tank full. Saved a few bucks over the years.

 

my whip is sippin' 92 from Shell.

 

400,000 miles???

Holy Crap!!

Have you needed any kind of major fixes to the engine or transmission??

 

91 BP fuel is definitely my favorite. I've heard it is some of the most advaced fuel? Though now all the BP's are becoming Conocos.

 

91 or 93 Sunoco or Texaco.

 

Ultra 93 always

 

i use "regular" lol

 

whichever 89 is near my location

 

BP 92, just for consistency

 

I always use 91

 

thank god gas prices are going down.. can afford the good stuff still..

 

Caltex (equivalent of Texaco in Australia) Vortex 98 - BTW costs around US$4.30 a gallon!

 

How much performance does one lose if 89 octane is used instead of 91 octane on a 99 Maxima?

 

Depends how you drive and where you drive. In a cool climate at high altitude with nothing but easy highway driving on flat ground, you'd have no performance loss and you might actually gain mileage. In a hot climate at low altitude with aggressive stop-and-go driving up and down hills, you'd lose a lot of performance and mileage.

 

I use 86 octane when I can find it....

I was just given a $300 BP gas card from a client, so looks like I'll be using BP. Tried to get it the other day and the place actually converted into a Coastal. What a sham, the guy took seriously 15 min to fill me up, then he said cash only and couldn't give me a receipt. This dude in a Forrester was so pissed he just did a drive-off. What a weird situation in Jersey with the full service only there's no service.....

 

Mileage will not be affected as octane affects predetonation and when it will occur.

 

Yes, but knock (which is what I presume you meant by predetonation) or lack thereof determines how the ECU computes timing advance and air/fuel mixture, both of which have an impact on power and mileage.

 

No, mileage is not affected by knocking, nor is it affected by lower or higher octane. Your analogy is one of the oldest urban legends. I once had a g/f who used premium so she could "get better mileage." I wish the perpetuation of these myths would stop because there are people out there who will believe in them.

USING HIGHER OCTANE FUEL WILL NOT IMPROVE FUEL ECONOMY, PERIOD.

 

Vocabulary > you.

If you're using a low grade of gas, your engine is more likely to knock. If the ECU detects knock, it retards timing and richens the mixture to compensate. This is not a matter of debate.

So, please explain how injecting more fuel into the combustion chamber with each stroke does not directly translate to more fuel usage.

Please also explain how timing retard does not directly translate to reduced power, requiring greater throttle inputs to acheive certain acceleration and thus indirectly translating to more fuel usage.

The best you can do is to show that many people will not notice an improvement in MPG or performance, given typical driving habits. That is definitely true. But unless lower octane fuels somehow regenerate themselves to compensate for their faster usage, it is stupid to say that octane has no effect whatsoever on mileage. For SOME people, there will be a very direct, very tangible, very measurable effect.

Unless, of course, you live in a universe in which you can inject more fuel into the cylinders without drawing it from the fuel tank. In which case, hey... More power to you.

 

I almost always use Sunoco becuase there are many around me, and alot of the times Sunoco has the lowest price in the area. Occasionally I will get gas from a Delta-Sonic carwash which is usually 2 cents lower then the lowest price within a mile (that is their guarantee) Ill buy Mobil if they drop to a reasonable price, which is rare, they are sometimes 20 cents higher than other places.

Im waiting patiently for 93 to drop below $3.00, its now at $3.04 at the Sunocos around here, its nice to know its coming down and not going up to $4.00

 

I would like to voice my new opinion on Sunoco gas. I think they are terrible for fuel economy but good for power. I actually feel the difference. Here is what I have to show for. I just started a new job and my commute is identical and driving conditions are practically the same every day with minor differences. All neglible.


Purchase Price Gallons Cost of Odometer Average
Date ($/G) Purchased Purchase (miles) MPG
9/6/2006 2.999 15.23 $45.67 3709
8/30/2006 2.999 13.828 $41.47 3264 29.22
8/28/2006 3.159 13.484 $42.60 2907 25.82
8/23/2006 3.059 14.733 $45.07 2503 29.96
8/21/2006 3.219 13.142 $42.30 2137 24.84
8/16/2006 3.159 13.592 $42.94 1791 26.33
8/13/2006 3.299 14.68 $48.43 1431 26.49


Sorry that may be hard to read, but to make it a little more simple to understand here is the trend I got:

??.?? Sunoco ***
29.22 BP
25.82 Sunoco
29.96 BP
24.84 Sunoco
26.33 BP
26.49 Shell

*** Just filled up on Sunoco today. If my fuel economy drops again, I will have to conclude its Sunoco. So far, I've noticed my fuel indicator dropping faster than the last tank with BP.


From what I see, BP gets superb mileage!!

 

I forgot to mention that above, all my purchases were 93 octane fuel.