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5.3L V8 gas?

B

bjm306

New member
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
 


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
 
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QwikGT said:
is a high performance v8, to deny it premium is like putting a bag over your grandmothers head
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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.
 


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
 
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
 


BoostedComp said:
it wouldnt do any damage... but i dont know exactly what you would gain from it though with you being stock
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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
 
Then keep it stock...it is a V8...most of the time the louder it is the more performance you are gonna had.
 
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