Would there be any advantages in putting 91 or 93 in a 3.1,I want to figure out how to make it somewhat faster,will my gtp be any faster since the hp was reduced due to regular gas?
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12-03-2013
Would there be any advantages in putting 91 or 93 in a 3.1,I want to figure out how to make it somewhat faster,will my gtp be any faster since the hp was reduced due to regular gas?
12-03-2013
Last I checked you can run 87... You do realize you posted this in the SC section so most of us will be respond as if it was s/c car.
The 3.1 is a turd anyways and no you will not notice a hp increase.
12-03-2013
Wait what kind of car do you have you mention a 3.1 then you say your GTP... Are these 2 different cars or are you mistaken what you really have.
12-03-2013
Lol I know what I got I got 2 grand prixs
12-03-2013
I'm talking about hp in my gtp not se
12-03-2013
Gotcha.. And still no you still won't notice a increase.. You'll just be helping to keep some potential knock down.
Now if your were talking racegas, e85 and advancing timing etc yea you'll be a increase but that's a whole other story.
12-03-2013
Will it blow it up if I put some in it?
12-03-2013
In either car?
12-03-2013
Not exactly but you'll want a tune to benefit from it in reality.
I just wouldn't do it
12-03-2013
Ok,thanks for y'all's
12-03-2013
Help
12-03-2013
Remember just stick to premium and you should be fine.
12-03-2013
And it's never to late to change
12-03-2013
Weird, my owners manual for my GTP says 87 is fine. I was running 87 when I first bought it because I didn't know it was better for it to run the higher octane. It ran fine and on a 400ish mile trip I got about 31.9mpg doing 70mph running 87. After I got home from the long trip is when I sorta started to read about using 91+ so I began using 93 since nobody around me sells 91, and 2 gas stations sell 92 at the same price the others sell 93 at
12-04-2013
Tomtom123, re-read your owners manual. A 99 GTP owners manual, page 6-3 reads and I quote:
"If you have the 3800 Supercharged V6 engine (VIN Code 1), use premium unleaded gasoline rated at
91 octane or higher. With the 3800 Supercharged engine, in an emergency, you may be able to use a lower octane -- as low as 87 -- if heavy knocking does
not occur. If you are using 91 or higher octane unleaded gasoline and you hear heavy knocking, your engine needs service."
Source:
http://www.vadengmpp.com/owners-manu...-GrandPrix.pdf
Originally Posted by W-Body Store
12-04-2013
Alright thanks. I was just looking in the back at the general "87 octane or higher for v6". I run 93 anyways =P
12-04-2013
You can run 87 just fine as long as there is no boost. Enter boost and you could go boom.
Sent from my iPhone using Tapatalk
12-04-2013
I always got boost lol
12-04-2013
Cam/headers and stock pulley should be able to pull off 87 octane noooo problem.
12-04-2013
So snowflake are you saying it will be ok?
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