V6 on 87 octane

[TooCool5]

Before top tier gas you had to run premium to get the detergents you needed to keep the injectors clean,
87 top tier solves this (same detergents).
If my car is not running right on 87 then I have to solve the problem.
Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.

Putting 93 in is just a band aid approach. (hello black exhaust tips)

Spent many Yrs in the Automotive field traveling to auto assembly lines, I know my cars like the back of my hands.
Each should do what gives them their own comfort factor.

[Mvp_Me]

Originally Posted by TooCool5

Before top tier gas you had to run premium to get the detergents you needed to keep the injectors clean,
87 top tier solves this (same detergents).
If my car is not running right on 87 then I have to solve the problem.
Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.

Putting 93 in is just a band aid approach. (hello black exhaust tips)

Spent many Yrs in the Automotive field traveling to auto assembly lines, I know my cars like the back of my hands.
Each should do what gives them their own comfort factor.

You seem to be worried about exhaust tips...... may I ask why? If they get dirty just clean them. I hope that's not the reason your using 87 or 89 gasoline.......lol

[camaro_RS]

Hmmmm......

[camaro_RS]

Originally Posted by SC2150

Then thats what you should run.....you have a good runing car your happy with, so there should be no debate as far as your concerned. But, facts are facts:

Direct injection has more advantages than just the cooling. That is a minor advantage. There is still detonation or we would not see it in logging these cars, but it allows higher CR with LESS detonation as the fuel is introduced in the final 2030% of the compression stroke so it is in the combustion chamber for a fraction of the time a traditonal carburated or port injection system that draws in the fuel air mixture on the intake stroke so it greatly reduces the incidence of detonation, but it is still there most definately. I'm not here to convince you of anything as you have shown yours is just how you want it. My contributions are for those that want to learn more and have the car run the best it can...and premium or regular has no effect on the exhaust tips, that is how rich or lean the engine runs and how effective the cats are.

Originally Posted by TooCool5

Before top tier gas you had to run premium to get the detergents you needed to keep the injectors clean,
87 top tier solves this (same detergents).
If my car is not running right on 87 then I have to solve the problem.
Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.

Putting 93 in is just a band aid approach. (hello black exhaust tips)

Spent many Yrs in the Automotive field traveling to auto assembly lines, I know my cars like the back of my hands.
Each should do what gives them their own comfort factor.

Hmmmm......

I've used 87 octane (I knew no better...and maybe I still don't but I'm trying 93 for the heck of it) since I got the car two years ago and my exhaust tips have always gotten black. I don't think it matters what octane gas you use....so I think I agree with SC2150 on that one.

[Jalberdi99]

will put 93 today and report back in a few days

[SC2150]

Originally Posted by TooCool5

Before top tier gas you had to run premium to get the detergents you needed to keep the injectors clean,
87 top tier solves this (same detergents).
If my car is not running right on 87 then I have to solve the problem.
Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.

Putting 93 in is just a band aid approach. (hello black exhaust tips)

Spent many Yrs in the Automotive field traveling to auto assembly lines, I know my cars like the back of my hands.
Each should do what gives them their own comfort factor.

Correct on port injection engines and keeping injectors clean. We don't recommend iver use of injector cleaners added every few tank fulls as we rebuild/flow match/clean injectors here with the ASNU system and to much cleaner can damage the injector internals.

Now on a DI engine, the fuel (as far as valves goes) never touches the intake valves so the coking issue is huge, even at 15-20k miles. Anyone that has remove their intake manifold can attest to their valves looking like this w/out a catchcan installed:

http://www.google.com/search?q=intak...w=2021&bih=875

This is a compilation of pictures submitted by techs all over the work dealing with the coking.

On port injection we can remove heads with 100-200 k miles that used top tier fuels and the intake valves still look like new.

[911medic]

Originally Posted by TooCool5

Could be moisture in the tank, dirty throttle or MAF, fuse pull etc etc.
Those who say "doesn't work on the V6" are wrong, I have proved it over and over.

What are you referring to when you say you've "proved it over and over"? The 5/20 fuse pull on a V6? If so, you're saying that it works on the LLT (with the Bosch ECM)? This contradicts everything I've heard about this topic, is why I'm asking.

[benji1997]

My experiment is over. I've gone through 2 full tanks of 93 and about 700 miles of mixed city/hw driving and I am currently at 21.1 which is only .7 ahead of where I was using 87 octane. That is insignificant and I will return to just 87. At least with my V6, 93 does not seem to give me any greater performance whether it be torque or gas mileage.

[KaBoom1701]

I just run one tank of 91/93 top tie gas per month to help keep in engine clean.

Other than that...meh...I'd say any performance increase in minimal.

I will say however this, this applies to stock V6 cars. Once you mod your car I would think having higher octane gas helps you take advantage of your mods you have on your car.

Just my two cents on this subject....

Move along, these are not the droids your looking for!

[Mvp_Me]

when i used 87 i would go to the gas station twice a week but with 93 its once(this is going to school, work, gym, and home) thats enough reason for me to use 93. in the end gas is gas though.

[Scooter11]

Most people think, oh fast car and kinda expensive, it should have premium! Simply not true... Take the Ferrari 308 Euro Spec, that car will blow its engine on anything higher than 89 octane because of low compression. In Italy during the 80s high octane fuel didn't exist and the car was a built with that in mind; stupid pump jockey tried telling me otherwise as I was filling up one day!

[GretchenGotGrowl]

Originally Posted by Scooter11

Look the simple fact is that the LFX and LLT engines don't have truly high compression pistons, so the higher octane really isn't necessary or helpful!
SS is a different story!

Most people think, oh fast car and kinda expensive, it should have premium! Simply not true... Take the Ferrari 308 Euro Spec, that car will blow its engine on anything higher than 89 octane, in Italy during the 80s high octane fuel didn't exist and the car was a built with that in mind; stupid pump jockey tried telling me otherwise as I was filling up one day!

Compression ratio of the LLT and LFX are much higher than the L99 and LS3.

[Scooter11]

Originally Posted by GretchenGotGrowl

Compression ratio of the LLT and LFX are much higher than the L99 and LS3.

You know what you're right! My mistake
I did a bit too much assuming there
11.3:1 to 10.7/10.4:1

But in my defense, the Ferrari I was talking about has a compression ratio of 9.7:1 so that part of my statement still holds water...

[GretchenGotGrowl]

Yeah and the LFX is 11.4:1. I would not put 93 octane in an old low compression engine either, though.

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