Top Tier Gas makes a difference

[spooky0]

Same thing happen to me when I picked up my SS, I right away new the dealer put 87 octane gas it felt sluggish. Even though it was new it didn't feel right. As soon as it was quarter empty I put Chevron 91 and I felt the difference right away it sounded good and responded even better. I haven't tried any other gas 76,Mobil....., not sure if I will, but I am a little curious to try Shell. Bottom line try 87 then 91 or higher octane and you will hear and feel the difference.

[cuspid]

There must be something to the top tier gas because we just took the throttle body apart on my wife's acura and we were surprised how clean it was. Thanks shell.

[fp115]

Originally Posted by 67MellowYellow

That all sounds well and good but my car had excessive pinging under mild to medium engine load with 87 octane fuel that was put in by the dealer. This was on flat roads and cool temperatures. The knock sensors and ECM could not completely compensate for it. If you want to put low octane fuel in your new SS Camaro, be my guest. I however would strongly not recommend this practice to anyone else driving a V8 camaro except as a temporary situation until premium fuel can be found. Fuel variability, hot weather driving, carbon build up over time, and mountain pass driving would only make this worse. I consider any pinging to be potentially damaging let alone a performance killer.

The models tested had over 15,000 km using 87 Octane and had no knocking at all. The models that were switching back and forth grew fine over time, about 2-4 refuels. Worked great if you did 2 (91) and 1 (87) for the models set out to do that.

You act as if GM doesn't try all possible scenarios when testing pre-productions.

You guys can all continue to say that the SS only uses 91 or up, but that is completely false. Enjoy arguing!

Originally Posted by cuspid

There must be something to the top tier gas because we just took the throttle body apart on my wife's acura and we were surprised how clean it was. Thanks shell.

That is a no-brainer, there is less ethanol, 4% less. New engines don't show the same difference, most of them are able to handle E85 for example, which is essentially 15 octane.

[knowitman]

Originally Posted by fp115

That is a no-brainer, there is less ethanol, 4% less. New engines don't show the same difference, most of them are able to handle E85 for example, which is essentially 15 octane.

What do you mean by 15 octane? Are you trying to say that it is 15% gasoline, because that is correct. Actually E85 has a higher octane rating, 105-110, because pure ethanol has about a 115 octane rating using the (R+M)/2 method.

[BIG_V_SS]

Originally Posted by 2ndgenz28

Will somebody fix that

I have nothing useful to add to this discussion. I just wanted to let 2ndgenz28 know your comments are absolutely entertaining!

I use high octane gas because I bought an SS for performance, I have a Civic for fuel economy/poor performance!!

[jkelly]

I know this is a dumb question but here goes anyway. What is KR ? I'm a girl and I don't know a lot about cars, I'm trying!

[Matrix]

I went with the dealer on first fill. Insisted they put premium in.

By theway, the difference here between standard and premium is about 12c.
60lts x .12 = about $6.

Come oon, if a dealer want to be that cheap over a sale of a Camaro, they aint gonna be in business very long.

[4.0=SS]

could be gas from a "cold" state like NY/NJ we add ethanol in the winter ...that would run poorly in Florida....just something to consider.

[4.0=SS]

There is a difference in gas. There is a market for crude oil and another for light-sweet crude oil. The light sweet is more refined and has less crap in it. That is what is used for top tier or premium gas. Age of tank and reputation for not substituting regular for premium is what should keep you coming back to any particular station IMHO.

[Dack]

Originally Posted by 4.0=SS

could be gas from a "cold" state like NY/NJ we add ethanol in the winter ...that would run poorly in Florida....just something to consider.

Only in the winter? Hell in Minnesota we add 10% to all gas regardless of season and are lobbying to increase to 15% (and I believe that's nationwide to decrease dependence on foreign oil)

Guess it pays to work for a design-build firm that's built 45% of the nation's ethanol plants.

But yeah, ethanol is high octane so there shouldn't even be a discussion to whether ethanol is detrimental to engines.

Oh! And for a side note, my '94 Z28 didn't like low octane gas. It lived and breathed premium.

[PQ]

Originally Posted by DCSS

Does this mean the octane table resetting issues have been corrected, since he does feel a difference in the octanes without doing a 5-20 fuse pull? If it has I missed all that info somehow.

Fairly certain it's been corrected on the newer ones, Not possitive if the first runs ones have been updated. It's nice to hear some seem to be correcting on their own. Not sure if mine has been updated as my dealer didnt' know.

It's NOT gonna hurt your engine to run low octane. You'll just get your a$$ handed to you by every GT Pony who you try. PLUS, the LTs and LS will give you a run for your money. I paid the extra money for the SS to run the car like an SS.

If you're plan is to allways run low grade fuel and never mod the car, you should buy the V6.

[Stex]

How much of a difference? Any time slips with the same car different gas/octane?