87 89 or 91?
05-04-2003, 04:58 AM
#1
Thread Starter
Join Date: Mar 2003
Location: United States
Posts: 9
87 89 or 91?
Someone brought the topic to my attention that my Stock 4.6L 2002 GT would run better on the actually more potent 87 grade fuel than it would on the faster igniting 91 (or 91+) grade fuel.
If i can run on 87 and see better, the same, or little to less difference (but not signifigantly less) horsepower, someone let me know, because 87 is about 20 cents cheaper.
If i can run on 87 and see better, the same, or little to less difference (but not signifigantly less) horsepower, someone let me know, because 87 is about 20 cents cheaper.
