Why use premium gas?

[avro206]

Originally Posted by slicker

ok then if it make that much diffrence in the SS. then why no difrence in the LT with a 6 under the hood. the manual says regular but i use mid grade from chevron so should i be useing regular or should i use premium

you have direct injection it runs fine on 87. But you can use higher if you want.

6.2L does not have DI

[OUR72GTO]

Originally Posted by slicker

ok then if it make that much diffrence in the SS. then why no difrence in the LT with a 6 under the hood. the manual says regular but i use mid grade from chevron so should i be useing regular or should i use premium

Oh WOW!

[SamSS]

Originally Posted by Dire Wolf

Your friend buys a Camaro SS and then refuses to put Premium gas in it out of principal?

I'm sorry but your friend sounds like a complete dick. I call 'em like I see 'em.

Do you guys use Chevron's premium, Shell's, which one? I use Shell's premium. Are they even different from one another?

[ffrcobra_65]

bottom line

If premium gas is Required, you must use premium or risk damage to the engine.

If premium is Recommended, you can get away with using regular or mid grade octane at the expense of performance.

If your car doesn't recommend or require premium but you are using premium, you are wasting money.

[hansenp]

I used 87 cause I didnt know any better until i came to this site with the complaint of bad knocking and pinging on hills. After using 91 it was gone. It responds so much better

[SSTony]

you should be putting premium in there and thats the bottom line.

[rodimus prime]

Just so you guys know, the cpu has two octane tables it runs its spark from, low and high. You can run either octane fine without the risk of damage, but with 87 you will be down on power.

[2SSRS@Gen5diy]

I have been running 87 for three months now I will re dyno this munth to see if i lost power in AZ i don't think there is much deference in the two.

[rodimus prime]

LOL.

Your worried about using the Vararam to get the most power for an intake, then you run 87 octane to really compliment it. Sorry man, but thats funny.

[1SSLOW]

i always used premium...even when I would drive my old honda accord. LOL.

So, now with the SS, you get your a$$ Ima keep on using premium.

[Trailbreaker77]

I use 93 all the time, it is my second vehicle so I don't have to fill it up that often. Maybe once a month.

[2010 SSRS]

Premium only, in all my Camaro's

[Camar0wn3d]

The Pictures below are the reason why. (Yes these tables are from a 2002 Z28 but the principle is the same). Low octane table pulls timing (to prevent detonation) which means less power. Why waste the potential for a measley $3 per tank?

[duder4thgen]

Originally Posted by slicker

ok then if it make that much diffrence in the SS. then why no difrence in the LT with a 6 under the hood. the manual says regular but i use mid grade from chevron so should i be useing regular or should i use premium

Mid grade or premium isn't going to hurt your 6, but it's a waste of money. Octane indicates a resistance to combustion, higher the octane, the more the fuel resists combusting. So when in an engine designed to run 87 you run mid or premium, you're running a fuel that resists combustion more than your engine is designed/tuned for.

Not gonna hurt anything, but it's a waste of money to pay extra for anything over 87, when that's what your car calls for. Might even hurt your fuel economy and power a little bit cause your engine is gonna have a harder time burning higher octane.