Supercharger

[rjtiminskygtp]

So, I was out looking at cars yesterday, and I looked at a Grand Prix GTP, a 1999, and on the gas door and in the manual it said to use premium gas ONLY, but when I talked to the Garage, they said it doesn't need prmium, and it'll run fine and be powerful on regular gas. Does anyone use regular gas with their supercharged 3.8's? If so, how does it run?

[terryk2003]

uhh...i would deffinatly be running premium in that...i can't believe someone told u it wasnt needed...i mean, it'll run on regular, but i'm sure you'd be getting KR which deffinatly isnt good for the engine and could cause premature failure...

[digitaloutsider]

Put premium in it, and never go to that garage again.

[99RegalGS]

I forget what years, but late L67's and L32's can run on regular (I'm thinking like 03+, but don't take my word on it). The PCM's in those are programmed to detect what octane fuel you're using and adjust as nessary. It's still always recommended that you use premium though.

[stevegasm]

Put premium in it, and never go to that garage again.

 

x2

 

Looking at the owners manual, and the fuel door specifically saying "Premium Unleaded Fuel Only", i'd stick to premium.

[digitaloutsider]

I forget what years, but late L67's and L32's can run on regular (I'm thinking like 03+, but don't take my word on it). The PCM's in those are programmed to detect what octane fuel you're using and adjust as nessary. It's still always recommended that you use premium though.

I know this was in the promotional stuff for the 2004+ L32's, but I don't know about the L67's.

[CEDRIC]

I forget what years, but late L67's and L32's can run on regular (I'm thinking like 03+, but don't take my word on it). The PCM's in those are programmed to detect what octane fuel you're using and adjust as nessary. It's still always recommended that you use premium though.

Yeah the L32's can use regular but it would bring the power rating down from 260hp to 240hp and I'm not sure about any L67 being able to use regular.The only reason the L32 gets away with it is because of the efficiency of th GEN V supercharger.97-03 GTP and GS premium only 04-05 GTP's and 06 GT regular can be used but you won't make the cars true power.04-05 Monte SS and Impala SS go by the same rules as the 97-03 GTP and GS because although they have some L32 components in the engine they still have GEN III superchargers.

[99RegalGS]

Yeah, I forgot to mention that with regular you'll lose power. And it probably was L32 only to have the option to run regular. I remember hearing about that awile ago and I guess I kinda applied it to the L67 as well.

[rjtiminskygtp]

Well on the page that talked about gas it said that Premium is required, but in a pinch regular would cut it...and the funny thing is the mechanic told me that and he owned a 2000 GTP, and when I asked the salesman at the local GM dealer here he said it doesn't need premium, and that that was a selling point for GM was that they didn't have cars that required premium...it's a big ol' messed up situation. I think, since I am a high school student, I might just have to settle for a 2000 or 2001 Grand Prix GT...and no longer have the P but what can you do I suppose...it's kind of disheartening. Or, I could just buy a GTP, suck it up and buy Premium since I have one year of school left, then when I get to work it'll be less of a problem. I don't know lol...oh the problems of life.

[97loudcut]

what is with some of you people..

 

gas is like 3 trillion dollars a gallon allready, I don't think 10 extra cents will make you or break you

[1990lumina]

My friend's parents used to have a Bonneville with the L67......they always ran regular in it and had absolutely no problems....

[CEDRIC]

My friend's parents used to have a Bonneville with the L67......they always ran regular in it and had absolutely no problems....

Did they ever take it to the track,I doubt it.My mom put regular in her GS a couple of times did it hurt it I don't know.That Bonneville was probably never pushed the way we push our cars.

[patgizz]

 

Yeah the L32's can use regular but it would bring the power rating down from 260hp to 240hp and I'm not sure about any L67 being able to use regular

 

you're quoting L67 #'s there.

[digitaloutsider]

No, he's right. The L67 is 240HP and the L32 is 260.

[patgizz]

they change the rpo code then for the series 3?

[ToroToro]

Yeah.

 

And premium is 20 cents more loudcut.

[Guest TurboSedan]

so it costs $3 more to fill the tank. big deal. i wouldn't let that be a deal breaker.

[sl3196]

so it costs $3 more to fill the tank. big deal. i wouldn't let that be a deal breaker.

werd. Funny thing is it costs more to fill my cavi with regular most of the time. (then the gtp) Cavi must have a bigger tank ha.

[97loudcut]

so it costs $3 more to fill the tank. big deal. i wouldn't let that be a deal breaker.

 

for some people that is, I mean that 3 dollars is like 2 snickers or a energy drink or like 4 cigarettes.

 

if you have a 'supercharged' car (and I know it can be hard) break down and spend the extra $3 to get the maximum performance out of your vehicle.

 

$3 / $.20

[ToroToro]

I wasn't saying the extra 20 cents was a big deal...but hey...I can actually buy a whole pack of smokes for around three bucks here. They must tax a shitload where you live.

 

This shouldn't even need to be discussed. Bottom line is: dont buy a car if you cant afford to put gas in it and maintain it. Exactly why there isn't a ferrari in my driveway. Well, kinda.