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Sedans Pontiac G8 2008 Pontiac G8
1265 messages, Last post on Jul 21, 2009 at 10:14 AM
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Replying to: mrpushrod (Dec 03, 2008 12:25 pm)  start of trip: 234 miles. Sunroof open "full vent", other windows closed. Seats = I found them very comfortable & supportive... - Ray Another tank fill scheduled for tomorrow AM... |
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Replying to: rayainsw (Dec 03, 2008 12:00 pm) Does your gas contain ethanol? The gas mileage of my three cars drops from 7% to 10% when using E10. Modern engines are optimized for gasoline. It's hard to tell, but I suspect E10 interferes with the cylinder shutoff in my 300C on interstate highways. |
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Replying to: pafromfl (Dec 03, 2008 6:26 pm) |
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Replying to: pafromfl (Dec 03, 2008 6:26 pm) No.
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Two more data points, for those playing along at home: Point 1: I filled the tank early this AM. Traveled 296 miles since filled. Gage showed just under a quarter tank remaining. “RANGE” showed 87 miles. Fill took 14.0 gallons of premium – at $1.86.9/gal. That is 21.1 MPG. DIC showed 21.7 MPG. Approx two thirds of this tank was a portion of the Interstate leg driving home from my Florida trip = 65 to 73 MPH. The other third was my usual commute, in & out of MidTown Atlanta. Point 2: As soon as I filled the tank, I drove my typical inbound commute. Warm engine, A/C off. This is approx 18+ miles of Interstate, starting at approx 5:45AM – so reasonable traffic – no cruise control – speeds generally 60 to 75 MPH. When I left the Interstate, for the final 3 miles or so of surface street driving, the DIC showed 22.4 MPG. Driven identically, under the same conditions, my Corvette’s DIC would show 28 to 29 MPG. Car: 2009 G8 GT – just passed 1,000 miles. - Ray Hoping for some improvement, once she is broken-in . . . |
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Replying to: rayainsw (Dec 04, 2008 3:37 am) is there a specific-gravity test like the little turkey-baster with tiny floating balls inside for testing car batteries? i understand that all "gasoline" in USA has a nonzero and nontrivial amount of ethanol, but i'd prefer to be wrong about that.
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Replying to: elias (Dec 04, 2008 5:07 am) ( including GA ) must label if \ when any significant amount: http://www.fuel-testers.com/state_guide_ethanol_laws.html Georgia - GA (1.5 % or higher) |
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Replying to: elias (Dec 04, 2008 5:07 am) The E10 pumps in Florida should have a sticker (sometimes very hard to spot) stating "contains up to 10% ethanol". It is getting very hard to find pure gasoline in much of Florida because the State Energy Act lawmakers passed this spring requires all gasoline sold in Florida be 10% ethanol by 2010. This will give a huge boost to the auto, boat, and small engine repair industry. |
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Replying to: paisan (Nov 28, 2008 7:29 pm) G8 and Solstice are the only 2 Pontiacs I like but I do like them A LOT!
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Replying to: vanman1 (Dec 18, 2008 7:34 pm) Either way, the Pontiac dealers here in NY/NJ will not budge below the Red Tag Pricing, so I've changed my mind completely, not only because they won't bargain, but they have a very cocky, unhumble attitude for a company on the brink of collapse! So instead I'll pickup an STi with 63 months of 0% financing! -mike |
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