Which octane do you use?
Melting Slicks
Joined: Feb 2002
Posts: 3,179
Likes: 13
From: Coal Valley IL
CI 4-7, 9 & 10 Veteran
Actually, the predetonation is what trips the knock sensors which tells the PCM to pull timing.
Le Mans Master
Joined: Jan 2005
Posts: 6,200
Likes: 233
From: "Nowhere Man"
St. Jude Donor '13-'14-'15-'16-'17-'18-'19-'20-'21-'22
Le Mans Master
Joined: Dec 2007
Posts: 5,738
Likes: 81
From: Milford NH
Actually it is saying a lot. That is over a 15% increase in gas mileage which translates to the equivalent of paying $.60 less per gallon (assuming $4.00 per gallon) for a premium fuel which should make your cost lower than the cheaper stuff and you get the benefit of the additional additives of a Top Tier fuel.
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Le Mans Master
Joined: Aug 2009
Posts: 5,437
Likes: 4
From: Bucks Co. / outside Philadelphia PA
Hi All
Last month I was on a trip following a friend. He was driving his 2006 C6 auto coupe I was in my 2005 C6 6manuel convertible.
At a gas stop he filled up with regular I thought he made a mistake.
He said he has run the car on regular almost always since first got it " 130K miles "
He said it has a slight bet more power on 91 or 93 but very slight
The next fill up I tries 91-E10 and the car ran the same Except I drooped
a little less then 1 MPG on the highway.
One other thing i have found is if i can find and run Pure Gas
" No ethanol " I pick up 1 plus MPG on the highway
Not taking sides just passing on my experance
Michael
Last month I was on a trip following a friend. He was driving his 2006 C6 auto coupe I was in my 2005 C6 6manuel convertible.
At a gas stop he filled up with regular I thought he made a mistake.
He said he has run the car on regular almost always since first got it " 130K miles "
He said it has a slight bet more power on 91 or 93 but very slight
The next fill up I tries 91-E10 and the car ran the same Except I drooped
a little less then 1 MPG on the highway.
One other thing i have found is if i can find and run Pure Gas
" No ethanol " I pick up 1 plus MPG on the highway
Not taking sides just passing on my experance
Michael
But this is a separate issue from octane rating.
93 for me.
Le Mans Master
Joined: Dec 2007
Posts: 5,738
Likes: 81
From: Milford NH
British Petrolium,They're still around? Got so bad for them around here that within 6 months after that God awful catastrophy all the area stations closed down due to well informed Americans deciding to get their fuel elsewhere.What goes around comes around.
