2002 Pontiac Grand Prix GTP Coupe Fuel Requirements

72,485

Asked by Dec 29, 2012 at 11:22 PM about the 2002 Pontiac Grand Prix GTP Coupe

Question type: General

My nephew just bought a 2002 Pontiac Grand Prix GTP Coupe. It has the supercharged 3.8L V6. The car didn't
come with an Owners Manual. He's wondering if he needs to put premium gasoline in it. Thanks in advance.   -Jim

6 Answers

102,835

It requires premium fuel - http://www.fueleconomy.gov/feg/noframes/17744.shtml - thanks for the "Best Answer" click.

Best Answer Mark helpful
72,485

Thanks so much!! Very cool website too. I'll let him know. -Jim

495

This car MUST HAVE PREMIUM. Also emphasize, if premium gasoline is not put in this car you WILL blow up the engine. There is not enough octane in the regular gas, when the car is given too much throttle when using lower octane gasoline the mixture becomes too lean and it WILL blow a hole right through the top of the piston on the car. So yes, you need premium.

2 of 2 people found this helpful.
72,485

Thank you Clayton, I'll let him know. -Jim

That's hog wash about blowing up the engine. I have a 2002 Super charged GTP that I bought new. As recommended by GM I ran premium fuel for the first 65,000 miles then switched to middle grade with out any problem or hicup. Never noticed any loss of power or performance. The car now has over 100,000 plus miles on it of hard L.A.freeway commute. Just use quality gas and never regular grade out of respect to the car.

Regular gas will not damage the engine if the ECM is functioning properly. I've run tests with all grades of fuel on my 02 GTP SC. Besides the obvious loss of power, lower octane fuel lowered my fuel economy. Why buy a high performance car if economy is your prime concern?

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