V6 fuel switch 87 to a higher grade

[rtcat600man]

Here is a whole thread dedicated to this subject.

http://www.camaro5.com/forums/showth...+timing+octane

[E.T.]

Has anyone heard if timing is still pulled when running midgrade, say 89 octane?

[LoneCynic]

I switched from 87 to 93 and my mpg went from 18.6-19.1 to 22.9-23.2 consistently since then. So between that, and whatever timing benefits there are to be had, I've been sticking with 93 in my V6.

[Cam#7]

I will be using a mid-grade 89 Octane when I my 2LT comes in. I bought an '05 Nissan Altima SE V6 3.5 (much like the GM 3.6) new 6 years ago. It also says to use regular gas. I predominately run a mid-grade and it's always easy for me to tell if my wife puts regular gas in it. These fast widing double overhead valve engines have more potential with the right gas.

[Taz_FL]

Originally Posted by usmc8411

People saying they can feel the difference in 87 or 91 ocatane is in their head. You are not going to feel 5-6 hp....especially in a 3800lb car.

I agree, your not going to notice a difference just by changing octane. People that do , in my opinion, are feeling "more power" because thats what they want to feel.

[jshaf]

drove on 87 for the first couple months, then I started putting 93 in it and the performance is almost night and day. sputtering went away, much smoother. People saying it's only in your head, well I know I didn't like the way my car was running and switched the gas and viola it improved instantly. I know what I observed, if you want to save a buck be my guest. I am putting the best in my car!

[Stett]

Originally Posted by rtcat600man

Here is a whole thread dedicated to this subject.

http://www.camaro5.com/forums/showth...+timing+octane

Based on the comments and information in the linked thread, I'm willing to give it a shot and feel for a difference... We'll see how it turns out.

The biggest obstacle is finding some pure gas stations as most are 10% ethanol around here.

[phenixdragon]

Originally Posted by John Shields

I've run 87 and now strictly 91. I noticed no difference in either performance or MPG. I just like knowing that I'm putting better fuel into my car (the low grade stuff out here can be sketchy at best).

lol, cracks me up to see someone things this.








Lots of posts about this but basically the higher octane means a slower burn which means have less combustion happening. Some cars are designed for less combustion as they are pushing out more power per combustion. Putting 91 in a car designed specifically for 87 means you are putting out higher power per combustion but you now have less combustions happening which means the over all power is lessoned. GM spent a lot of money over the years designing this motor, and if they felt there was a performance increase they would recommend higher octane. I doesn't hurt the car to do it, just you are taking a performance hit. Now a car designed for higher octane should never have a lower octane in it, not only does it decrease performance but it also can harm the motor.

[usmc8411]

Originally Posted by phenixdragon

lol, cracks me up to see someone things this.








Lots of posts about this but basically the higher octane means a slower burn which means have less combustion happening. Some cars are designed for less combustion as they are pushing out more power per combustion. Putting 91 in a car designed specifically for 87 means you are putting out higher power per combustion but you now have less combustions happening which means the over all power is lessoned. GM spent a lot of money over the years designing this motor, and if they felt there was a performance increase they would recommend higher octane. I doesn't hurt the car to do it, just you are taking a performance hit. Now a car designed for higher octane should never have a lower octane in it, not only does it decrease performance but it also can harm the motor.

I know right. I put in da hiha grade fuelz and I can feel teh powa! Vtec!!

I kill me.

[WyteMamba]

not true for an ss

Originally Posted by Taz_FL

I agree, your not going to notice a difference just by changing octane. People that do , in my opinion, are feeling "more power" because thats what they want to feel.

[dtm4192]

At first I used 87 in my Camaro but after I had it for a while I switched to 93 and I could definitely feel a difference. Also my mpgs increased

[melody301]

I just switched to 97 and noticed the fuel doesn't burn as fast. I'm getting a little better fuel economy.

[GreenMonster]

Originally Posted by PoorMansCamaro

i never noticed a difference, but that's because my car has never tasted anything lower than 91 octane.

+1

[PoorMansCamaro]

Originally Posted by melody301

I just switched to 97 and noticed the fuel doesn't burn as fast. I'm getting a little better fuel economy.

97?! Lucky bastard!