David,
I think some of the additives OR lack of additives are the main culprit
for different gas brands causing pinging. I don't get ping on 87 octane but I
run 89 anyway. I actually get a little better gas mileage on 87. Down here on
the Gulf Coast I don't think they add much to fuel in the winter due to it
not getting that cold. PLUS, we have got 3 refineries within 60 miles of us.
1 Shell, 1 Chevron & 1 Mobil.. Bill
SEMIHEMI01@AOL.COM (Bill C.) 2001 QC, 4.7L, 5spd. 3.55 LSD
K-N + Cool-Air, Quick-D TB, 10w-30 MOBIL 1, 180 T'STAT, SilBlades
GIBSON 3" Single Side-Swept cat-back, G-TECH, <A
HREF="http://hometown.aol.com/semihemi01/">"THE DAK"</A>
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