Switching Octanes

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Apr 30, 2006 | 10:37 PM

#11

Quik

5 year bitches!

iTrader: (7)

Joined: Oct 2003

Posts: 4,890

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From: Pittsburgh!!!!!!!! Pa

Quote:

Originally Posted by CHEVY6000VHO

Yeah your right. The service department lied to me. They told me it would run fine on 87oct fuel.
This tells me they were wrong:
http://www.powerblocktv.com/crate/crate.html#12

Jim

its ok but as long as your motor is safe and no popped gaskets

Apr 30, 2006 | 10:40 PM

#12

goshawk23

Truck addict

Joined: Apr 2003

Posts: 6,559

Likes: 0

From: Ocean Springs, MS

when my truck was stock other than exhaust it ran worse on 87 than 89. it ran even better on 93. i am basing this off of mileage i got from the math i did and from the audible knock from the engine. 87 under wot made the truck sound like ****. 89 wasn't as bad but 93 gave me no engine noise from the valve train or where ever other. i'm not saying performance was better, just the engine seemed to run smoother and quieter with higher octane fuel. yes i did notice better mileage as well.

May 1, 2006 | 05:09 AM

#13

BADMOFO

Cuz I AM a BADMOFO

Joined: Apr 2003

Posts: 3,624,039

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From: Mission to Uranus

Quote:

Originally Posted by Colby 04

holy **** you have a lot of free time on your hands

No ****!

May 1, 2006 | 06:22 AM

#14

Whippled 496

TECH Addict

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From: Lake Shore, MD

Used to run Sunoco 94 octane but they stopped carring that here. Now I use Citgo or Shell 93. NEver ran anything but 93+ since i had it.

May 1, 2006 | 07:40 AM

#15

JimS

TECH Fanatic

Joined: Jul 2005

Posts: 1,396

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From: Galesburg Il

Quote:

Originally Posted by Out1aw

I did the calculations today and found that every fill-up would only cost me $5 more if I ran 93 octane fuel as compared to 87 that I run now. I also know that LS1 f-bodys are supposed to only run 93 octane to run correctly. So my question is: Is it worth the switch (hp and mpg wise) to 93 octane?

Thanks

Now that's one of the nice things about fi. That difficult decision just goes away! No more worries.