Another dead thread. I'm done.

 

Its recommended to see a doctor once a year too.....how many do this?
And stated that the HHRs need all the power they can get,,,hmm, are they not comparably powered to the 'other' 4 cylinder cars? I guess that means the 2.2 should be scrapped as it doesn't cut the mustard either....I think alot of performance increases felt are mental.....its because you 'want' it be better, not because it actually is. I don't think anybody here short of somebody who may actually work in the area can absolutly say they can feel a 5 hp increase. Seat of the pants is not scientific, therefore holds no value.Try a drag strip run with timeslips(not as accurate)...or try a comparrison on a dyno....settle it.
Longer life...that depends on maintenance, not fuel, otherwise GM was 'tell' you what to run, not give you a choice.This is really a bad arguement as it goes against common sense.

 

Well, I thought I was done. Burn whatever you want out there, it's your choice. Less power is fine if you don't mind. It's not an imaginary decrease when using regular, so cut the B.S.. I can't stand when people try to blur fact with opinion because in this case they don't want to spend the little extra for what is recommended and beneficial.

 

No. It won't matter. But the 2.4L appears to have been tuned for 91+ octane so it's really a matter of what you want to do. If it does what you want on 87, it's not going to harm anything.

 

No. It won't matter. But the 2.4L appears to have been tuned for 91+ octane so it's really a matter of what you want to do. If it does what you want on 87, it's not going to harm anything.

I understand your frustration but since the 2.4L will run fine on 87, is it worth trying to convince people otherwise? The manual clearly states the engine will perform better on 91+ but it will do what 90% of people want it to do on 87. I could have tossed 91 in the truck and not had the knock retard but decided to stick with 87 (which was the recommended octane.) I rarely ever beat on the GTO and 87 would have been fine but I stuck with 91. With the SS, since it's boosted I run 91 but again, I just don't beat on it. I'll bet I wouldn't notice 87 in there since I rarely hit boost as it is.

At some point you just have to state the facts and move on. Let people use the information how they want and make their own decisions.

 

Right on.
BTW, just filled up with Shell premium, flew home!

 

The fact is Premium makes more power than regular.

Regular cost a little less than Premium.

GM offers most of their vehicles today with a Recomended rating so it is up to the dirver to choose. It does not void a warranty nor cause any issues.

GM likes to offer the ability to choose what you want to run to help sales. If it was Premium Required it can scare some people off from buying a vehicle.

The computer takes all this into hand and gives you the choice to choose and there is no right or wrong choice only the one you make for yourself.

I am not sure the of the power decrease in the 2.4 but in a 3800 SC Series II it is around 20 HP and similar in a stock SS 2.0. Not much but enough to notice.

So what is all the arguing about as there is no wrong choice only the one you make that is right for you.

It is nice to have this option if you are out somewhere where no premium is available. I know it is not fun to put regular into my SSEI and nurse it to another place to find some premium.

So fellas run what you want and make your choice of more power or save some money.

 

Well said, Hyperv6!

 

 

I find it sort of funny that people dismiss premium as being "too expensive" to use without actually having tested and documented a comparison. I will concede that for some, it may not pay off. Driving style and road conditions play a major role in what's going to work well for some and not for others. But they only way you are ever going to be able to make an informed decision is to test it for yourself. It shouldn't matter what I, nor anyone else on the internet says is right or not. Really, what do I know?

Anyway, as I've stated here many times, I've tested both and have done the math. I get just enough of an increase in mileage using premium that I actually save about $100 a year at $3 a gallon. With the extra power benefit, why wouldn't I use premium?

The cliche says, "your mileage may vary". That holds so true with this discussion. But again, unless you try it, you'll never know.