Did I just read the GTP requires Hi-Test ?? I'm about to purchase a pristine '99

Bill Walter
0

Asked by Mar 11, 2013 at 11:08 PM about the 1999 Pontiac Grand Prix 2 Dr GTP Supercharged Coupe

Question type: General

4 Answers

tennisshoes
69,155

For optimum performance and fuel mileage high test is recommended. You can use regular but don't do any high performance driving or you could blow a hole in the pistons. I'd say bite the bullet and use premium.

tenspeed
84,705

Try both grades and use the type that gives you the best miles per gallon.

munron
3,095

No, do not choose your fuel for miles per gallon! That's not what its for. Use the fuel recommended by the manufacturer, which in the case of the GTP is midgrade or premium. Check the owner's manual for your specific application to be sure. The correct fuel helps the engine operate at the corrrect temperature and that is necessary for the overall health of your engine.

John Saffrahn
28,985

Low grade fuel in a forced induction engine or an engine with a high compression ratio will cause predetonation. Predetonation can bend rods if it detonates early enough.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 4,484 nationwide Grand Prix listings starting at $1,700.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,300
#2 Tom Demyan
Tom Demyan
Reputation 2,350
#3 munron
munron
Reputation 1,750
View All

Related Models For Sale

Used Chevrolet Impala"
842 Great Deals out of 31,519 listings starting at $1,000
Used Pontiac Grand Am"
2,047 listings starting at $2,500
Used Pontiac Bonneville"
6 Great Deals out of 826 listings starting at $1,295
Used Chevrolet Monte Carlo"
18 Great Deals out of 2,042 listings starting at $2,500
Used Chevrolet Malibu"
983 Great Deals out of 56,610 listings starting at $1,995
Used Ford Mustang"
650 Great Deals out of 45,465 listings starting at $1,550
Used Chevrolet Camaro"
536 Great Deals out of 33,806 listings starting at $2,995
Used Nissan Altima"
1,726 Great Deals out of 81,014 listings starting at $500
Used Nissan Maxima"
362 Great Deals out of 23,175 listings starting at $2,400
Used Pontiac Firebird"
16 Great Deals out of 875 listings starting at $2,800
Used Honda Accord"
1,255 Great Deals out of 73,197 listings starting at $500

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
22 Great Deals out of 594 listings starting at $2,500
2007 Pontiac Grand Prix For Sale
24 Great Deals out of 644 listings starting at $1,981
2006 Pontiac Grand Prix For Sale
10 Great Deals out of 747 listings starting at $1,800
2005 Pontiac Grand Prix For Sale
4 Great Deals out of 490 listings starting at $2,750
2004 Pontiac Grand Prix For Sale
7 Great Deals out of 748 listings starting at $1,700