How long since the last Premium fuel vs Regular fuel question?

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01-10-2013, 08:28 PM

#21

Rod Run

Senior Member

Join Date: 09-05-2009

Location: New England

Posts: 452

Quote:

Originally Posted by kingkat4

Hi Dog

Yup I know it's kind of hard to forget that. With that stupid flexfuel badge stuck on the rear. Doesn't that mean you can run e85 etc? That stuff is to get less mpg and less power?

E85 will get you less MPG but it does deliver more power.. much more power in high HP applications

01-10-2013, 09:24 PM

#22

American & Proud

Rest In Peace

Join Date: 06-13-2010

Location: IL.

Posts: 2,301

Quote:

Originally Posted by Rod Run

E85 will get you less MPG but it does deliver more power.. much more power in high HP applications

Very True.

Not enough E85 gas stations around me to make the Switch with the Supercharger install coming up. If all the Shell Stations carried it, I would switch, but I only see a few different stations dotted here and there that have it looking online for stations with E85.

Not worth the effort to run it when you can't just pull into Any station to get it.

Well at least Shell Gas cause thats all I run in Morticia.

I'll continue to run Shell Premium 93 octane as I can get 93 octane just about anywhere around here. Other stations have 93octane in a pinch but I usually fill up with a 1/4 tank left so i'm never in a pinch looking for gas.

01-11-2013, 06:10 AM

#23

solman98

Senior Member

Join Date: 07-17-2006

Location: Dallas, GA

Posts: 6,050

Quote:

Originally Posted by Oldblue

potatoe potato, I didn't see any difference after 5 tanks of each during a test I did when I got the LS back in 2009 except of course the price

LS = 2.2
It's designed to run on 87. You won't see any differance on a higher octain.

01-11-2013, 06:29 PM

#24

Rod Run

Senior Member

Join Date: 09-05-2009

Location: New England

Posts: 452

Quote:

Originally Posted by solman98

LS = 2.2
It's designed to run on 87. You won't see any differance on a higher octain.

Not true for 2009. In 2009 the recommended octane is 91. The reason being, is that these engines can go back and forth from regular gas to E85(hence the flex fuel badges), so they are built with the higher octance requirement in mind.