I just purchased a 06 GXP and heard that I should use premium gas. Should I use the higher octance or is regular ok. What octane gas to most people the V8 use? Thanks
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05-12-2009
I just purchased a 06 GXP and heard that I should use premium gas. Should I use the higher octance or is regular ok. What octane gas to most people the V8 use? Thanks
05-13-2009
Welcome. congrats on your purchase. U can use regular no problem. You wont have the power that u could have if u ran premium. The car will pull timming at higher RPM's. When i first got my car i used regular unleaded. Then i got a dyno tune and it hasnt seen nothing but Premium since. If ur after just a daily driver, and dont plan do to much performance mods. then use reg/mid. If u want the most for the car you paid for run premium. It up to you.
IF u have any more questions ASK away.
The 2008 Pontiac Brocher say premium fuel is recomended but not required
Last edited by Panther427; 05-13-2009 at 04:55 PM.
05-17-2009
93+ that is all she has ever seen.
05-17-2009
without turbo, supercharger, i dont think 93 will make enough diff to outweigh cost
05-17-2009
The LS4 has a 10.0:1 compression ratio. Without premium it is pulling quite a bit of timing to prevent knock.Originally Posted by chad27
05-17-2009
is a high performance v8, to deny it premium is like putting a bag over your grandmothers head
05-17-2009
LMAO that messed up
05-18-2009
That was pretty good. I'd still run 91+ in any car the "recommends it" honestly. Hell my buddy's 4.0 V6 Mustang ran nearly 3 tenths faster in the 1/4 with race gas in it...same 60 ft. and R/T too...who knows.
I'd say run the premium anyways...its like what? $4 more a fill up vs. the low octane junk? Exactly.
06-13-2009
93 is hard to find in az, I fill mine with 100+ if i find it, other then that 91 shell v-power all the way!
06-13-2009
lol does make sense
06-14-2009
So making that into a t-shirt hahahaha
07-24-2009
lol i filled my car with 107 octaine the other day....car was a rocket hahaha
07-24-2009
i have wanted to try that.
07-24-2009
thats all i run in my 06 is 93. ask my wife, I get pissed if she puts a single drop of 87 or 89.
BTW she may be joining the site, as for we're going to go look at a '00 GP GT tomorrow, haha
08-11-2009
can you put 100+ oct in your car when its straight stock??? Highest I have put in is Shells 91 and was curious how she would handle if I did that
08-11-2009
it wouldnt do any damage... but i dont know exactly what you would gain from it though with you being stock
08-11-2009
Thank you. I figured it wouldnt do much being its STILL stock. Only had it a week tho. Doing home work on exhaust systems. I want something that sounds clean and smooth. NO mustang type exhausts. I wanna be a silent killer lol
08-11-2009
Then keep it stock...it is a V8...most of the time the louder it is the more performance you are gonna had.
08-13-2009
gonna had? lol
08-13-2009
So making that into a t-shirt hahahaha
haha cojo -- there'es the next gp forums t-shirt design!! haha. and I've never used anything but 93. It only ends up costing me an extra $2.80 a tank. that's worth it to me
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